sledracr

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Everything posted by sledracr

  1. sledracr

    IOR landfills?

    Yeah. The best thing about IOR was that it let the owners (and designers and builders) play with things. you could have a 27-foot half-tonner or a 30-foot half-tonner, as long as they rated in they raced "level" and it was an interesting experiment. it led to explorations of obscure corners of performance vs. rating, which led to boats that were awkward to sail well, uncomfortable and ... whatever. On any given day, any given design could be inherently better than another, which led to lots of "if only" discussions at the bar. The worst thing about IOR was that it let the owners (and designers and builders) play with things. you could have a 27-foot half-tonner or a 30-foot half-tonner, as long as they rated in they raced "level" and it was an interesting experiment. it led to explorations of obscure corners of performance vs. rating, which led to boats that were awkward to sail well, uncomfortable and ... whatever. On any given day, any given design could be inherently better than another, which led to lots of "if only" discussions at the bar. One design was a lot more attractive if all you wanted to do was sail and see how you did. All the variables were removed except "you". Bonus points if you could sail the boat without sitting on weird-shaped coach-roofs and contorted into rule-bending trimmer pits.
  2. sledracr

    Racism in Mathematics?

    Random aside (but on the topic of genius math professors) I took one second-year math course from a guy named... let's call him Dr. Grant. Well respected teacher, popular class. As is (was?) normal, he did the lectures in a big lecture hall, probably seated 600-700 students, and most of the actual interaction was with TAs in the various study sections. The class was full when I initially wanted to enroll, but after a couple of weeks some number of kids had dropped the class so I "added" it, which (at the time) meant going to the front of the hall after lecture to get his signature on an "add card". Flash to a month or so later, he's reviewing stuff for a mid-term exam and asks if there are any questions. Encourages people to stand up and get clarity on things, because if "you" have that question it's probable others do as well. So I did. I stood up and he says "yes, [Sled]?" Huh? In a class of hundreds of students, with no assigned seating, etc... plus, I was kind of a ghost in college, usually sat somewhere in the back of the hall, didn't hang with a particular group. how the fuck did he know my name? The only interaction I'd ever had with him was the 5 seconds it took for me to shove an add-card onto his lectern and watch him sign it. I short-circuited - I was so surprised, I fumbled my question. Oh well Flash forward a couple of years. I'm walking around the outer loop on campus to get to the computer-science complex, and he's walking the opposite direction. As we pass I said "good morning, Dr. Grant".... and without batting an eye he said "good morning, [Sled]" To this day I have no idea how he knew my name. Did he know the name of *every* kid in *every* class he taught? And have the ability to pull it out on a moment's notice, forever? Dunno. But I know whatever it is, it's on his side. I'm not particularly remarkable. **I** barely remember my name. And yet if I were to cross paths with him again, some 40 years later, I think it's an even-money bet he'd greet me by name.
  3. sledracr

    Racism in Mathematics?

    Heh. Another one of my profs (I had some great, thoughtful and thought-provoking professors in college!).... 10 week computer-science course in compiler design. Each week had a project to illustrate one of the concepts. Had to check in working, syntactically-correct commented code for credit. Most of the kids did each assignment as a stand-alone problem - figure out what the right result was for that week's assignment, pound out some code that produced that result, and turn it in. easy-peasy. ....except, in the last week of the quarter, the professor announced that those 10 projects were 10 modules of a compiler, and you had to demonstrate a working compiler to him before he'd let you take the final. He would test it by running some source-code through it and if the resulting object-code ran, you got a ticket to the final. Maybe a third of the class made it through to the final. But we all passed, because we got there by actually learning the material instead of just solving the problems.
  4. sledracr

    "National Cleavage Day"

    I don't get the underarm thing, but I have some great memories from college that started with my girlfriend coming in the door and pulling off her dress and getting naked except for her tall cork platform wedges.... so that ^^^ definitely works.
  5. sledracr

    Racism in Mathematics?

    Feh. Had typed a bunch of stuff, but then remembered why I stay away from PA. People there aren't interested in truth, only in beating each other up with talking points and ad-hominems. In that game, you win. (although I still haven't heard you say how you can defend anything other than one-vote-per-eligible-citizen)
  6. sledracr

    Racism in Mathematics?

    Cute talking point. Vote integrity means every eligible citizen has the opportunity to cast one vote. Multiple votes, votes from non-citizens, votes from ineligible citizens, votes from dead citizens, boxes of votes that appear out of thin air... not sure how anyone can defend those as enhancing "vote integrity". Yet all attempts to limit - or even investigate - those have been labeled "voter suppression" (and racist). Even attempts to purge voter rolls of (e.g.) dead people and people who have moved to another state, are called "suppression". Which is intellectually dishonest, at the very least. No matter which side you're on. Mathematically, those things increase the probability that the vote-per-eligible-citizen ratio is moving away from the objectively-correct answer.
  7. sledracr

    Racism in Mathematics?

    Heh. not just econ profs. I took a variety of upper-division math courses (set theory, combinatorics, etc) and... in one of them, the prof did what profs always do in the first lection, he announced the basis for the grade in the course.... quizzes would count for some portion, mid-term exam, and final exam. Except he couldn't make the total come out to 100%. Took several swings at it, no joy. Finally he threw his chalk at the chalkboard (hey, it was the 80s), and said "fuck it, this is a mathematics course, not an arithmetic course. YOU figure it out."
  8. sledracr

    A big project!

    Part 2 just dropped an hour or so ago...
  9. sledracr

    Racism in Mathematics?

    Agreed. I was a TA for freshman calculus in college. I was astonished how many of the (obviously smart, or they wouldn't have made it that far) students didn't get simple differentials. At one point (I thought this was genius, although I think he got in trouble for it), the professor put a question on the final that was fully 50% of the score on the exam. "what's the derivative of your age with respect to time?" It told him, in an instant, whether or not the student "got" what they'd been taught for the last 10 weeks. Many of them figured they could solve the problem by picking numbers and plugging them into equations, and (literally) filled pages of the exam book with assumptions and calculations showing how they picked the numbers they chose. On the other hand, the ones that "got it" instantly knew the answer was "1" (or "a constant" if you prefer) - a derivative is a measure of the rate of change, and "your age" moves at the exact same rate-of-change as "time", no matter how old you are or when time began (you should have seen some of those assumptions). For every day that goes by, you get a day older. It took them less time to work that problem than it's taken me to type this sentence. Anyway, yeah, to your point, there's a difference between being able to solve a math problem, and "getting it".
  10. sledracr

    Racism in Mathematics?

    "The concept of mathematics being purely objective is unequivocally false, and teaching it is even much less so," the document for the "Equitable Math" toolkit reads. "Upholding the idea that there are right and wrong answers perpetuate objectivity as well as fear of open conflict." I'm just gonna say.... I'm glad I'll be gone before that generation of kids starts designing bridges and airplanes.
  11. sledracr

    IOR landfills?

    I love it when you use technical terms...
  12. sledracr

    Land Hoe

    Hard to tell. Your posts are always so subtle and nuanced.... <lol>
  13. sledracr

    Using Gorilla Glue on your Hair

    I can't personally decide what (I think) is the most stupid part of this. -- that she - consciously - picked up the Gorilla Glue because she was out of her normal hair spray? -- that she went to the hospital and wasted medical-staff time as if it was a medical issue? -- that people are actually raining money into her GoFundMe? -- that she's now decided to sue Gorilla Glue (for what, I'm not sure, but...) -- that she'll probably get paid, if only because settling is always cheaper than litigating. Feh. Bill Engvall should do a special edition of "here's your sign", just for her.
  14. sledracr

    What's a fair price for this boat?

    yeah, it's trite. But it's also true. Boats (cars, houses, dogs, collectible art...) don't have a lot of intrinsic value. By that I mean there isn't a single-number metric (price per pound, price per square foot, price per horsepower, whatever) that objectively defines the value. The value is driven by subjective vagaries of current trends, historical significance, personal style choices, etc. Take my parent's old house in Irvine (southern California). They bought it in the 70s for ~30k. The national 25-year average home appreciation rate is something like 4% - that would imply a current value of around $200k for that house, yet it's estimated to be "worth" more than 2.1 *million*. 10x what it "should" be worth. There's absolutely nothing about that 50-year old, 2100-square-foot, minimally-updated tract house that's "worth" that much money, except for the fact that someone is willing to pay that much to live in that zip code. So it is with boats. You could take two effectively-identical boats - let's says a mid-80s catalina and a mid-80s ericson. similar specs, similar condition, similarly equipped, etc. One might argue the Catalina is worth more because of the relative ubiquity, the larger community, the still existing dealer network, the availability of OEM parts... or one might argue that the Ericson is worth more because of the relative rarity, the designer's reputation, the build quality, the sailing characteristics, whatever. The only difference is in what the (potential) buyer cares about, and whether they're willing to pay for it. $.02
  15. sledracr

    IOR landfills?

    ^^^nice looking *boat*. Flipping through the pictures, it's clear someone has put a lot of time and thought into keeping it updated and sound. (that photo of the dual fuel-filter system reminds me I've got to spend some time in my engine space...)
  16. sledracr

    Shipping a sailboat

    I had my boat trucked ~1200 miles (Los Angeles area to Seattle area) My observations -- only you can decide if the boat is worth the purchase price plus all the additional costs. -- those additional costs can add up. besides the shipping cost, there's your travel (and lodging), yard time, crane time at each end, etc. plus having the rig pulled. Plus road permits. plus insurance. plus, plus, plus. -- having a yard prep the boat is expen$$$ive. I was quoted $8k to prep my boat. I ended up taking a week's vacation and doing it myself. And (according to the truck-driver) I did a more thorough job than the boatyard typically does. -- if you do decide to prep the boat yourself, ask the trucking company what they want. in my case, the company wanted water tanks and holding tank empty, fuel tank "not full", hatches and ports taped over with "preservation tape", all movable gear (blocks, etc) off the deck and stowed. They recommended NOT doing any shrink-wrap covering because, in their experience, any loose edge will flap at highway speeds and damage the boat. Their overall guidance was "prepare the boat for several days of constant vibration, with hurricane-force winds and the potential for sudden stops". That provides some useful context for knowing what to seal, what to pad, and what to secure. -- don't forget that at the other end of the trip there's more to do. at the very least, yard costs to put the boat in the water and step the mast, so be sure to account for those costs. -- the shipping cost is not (usually) based on miles. If the shipping company can "chain" some jobs (eg, drop off another load where they're picking up your boat, and picking up another load where they're dropping your boat off) it can vastly reduce the cost. In my case, I looked at a boat in Montana and walked away because the best estimate I got was over $10k, because the trucking company would have basically dead-headed to Montana for the pickup. Trucking the boat up from California cost less than a third of that, even though it was more than twice the distance. If you can provide a flexible "window" of time for the job, rather than a fixed date, that can help the price a lot. -- be aware of height and width issues. Be prepared to tell the company your boat's overall height (from bottom of keel to tallest piece of deck gear, usually the bow pulpit). If they can load the boat so that it is less than 13'-6" tall when on the trailer, they can take faster routes. If no, the trip will be more expensive - both in permits, and in time spent being routed around potential height limited overpasses and such. If you're close (or over) the limit, taking off the pulpits and stanchions (time and effort) can reduce the height enough to save you a thousand dollars or more. -- in some cases, there are other issues to be aware of. Shipping a boat from CA to WA meant having to clear "environmental checks" at the Oregon and Washington borders. Simple process to prep the boat for those checks, but would have been a headache (and potentially more expense, if it delayed the truck) if it had been a surprise. -- use a company that moves boats for a living. the "U-ship" and similar bid-based companies are a crapshoot. IMO, the leaders (Boat Transport, Dudley, Mojer, etc) are leaders for a reason. -- whichever company you choose, make sure the quoted price includes three things: the trip, all necessary permits, and coverage on *their* insurance "from lift to lift" (from the time it touches their trailer, until the time it comes off). In addition to being on the shipper's insurance, I also got a binder from my own insurance company that covered the boat and contents during the trip. Cost me about 40 bucks IIRC. Cheap peace of mind. -- and bear in mind that for the most part, the trucking company won't know or care about what's inside the boat or how it is packed. Their job is to move a boat-shaped thing from one spot to another. If you (or the yard) do a crappy job of preparing things inside the boat, they won't care and won't be liable for the damage. In my case, the company was especially pointed on that - they told me to lock the hatch and pocket the key, as a way of underscoring that they were not responsible if anything inside the boat bounced around and caused damage during the trip. That gets your attention. All up, it cost me about $7500... that's the trucking cost, the yard costs at both ends, my travel costs, a bunch of materials (bubble-wrap, preservation tape, etc)... and a week of vacation time to take the new-to-me boat apart and get it ready for the trip. For the right boat, it can totally be worth it. I'm very happy I did it. $.02
  17. sledracr

    Must Be Nice - FP

    Hull is spectacular. I'm luke-warm on the house design forward. Seems chunky and out of place on a hull that elegant.
  18. sledracr

    She's the breast pianist I've ever seen!

    way to jiggle the ivories!
  19. sledracr

    IOR landfills?

    Mine'll be 37 years old this year. but it identifies as much younger.
  20. sledracr

    IOR landfills?

    I would have thought someone would have tried grinding up glass into a powder and using it for filler or thickener (like West-system -404 or -405) Granted, as someone said above, they'd need a steady supply of hulls to make it worthwhile, so probably not economically viable....
  21. sledracr

    IOR landfills?

    I never found the Soverel, but a Roller-Coaster (venerable choate-peterson 44) popped up 1981 Dencho IOR 44 sailboat for sale in Florida (sailboatlistings.com)
  22. sledracr

    Morris 29 in SFO

    Great photos in the listing. A lot of the times I'm amazed at all the crap people left laying around in the photos For this one, not only is the boat tidy, someone got all "artsy" with the camera.
  23. sledracr

    "National Cleavage Day"

    Huh. I was thinking I'd need a towel for my face after licking up all the whipped cream.
  24. sledracr

    Team NYYC

    It's an interesting point, though. One of the most basic tactics at a mark rounding is to go into the mark wide so you end your turn on the new course right at the mark. Minimize wasted distance. I haven't seen *any* of the teams do that with any consistency. The vast majority of mark roundings, the turn started at the mark and then chewed up wasted distance above (or below) the mark before settling down on the new course. Other than the obvious (speed's effect on the turn), is there a reason they're willing to burn distance after the turn rather than use the distance before the turn to make their rounding more efficient?
  25. sledracr

    Friday Tension Gauges

    Not sure I understand what’s being measured here....