Search found 8 matches

by nichi
Sat Apr 15, 2017 7:12 am UTC
Forum: School
Topic: Two simple tricks to month long subjects
Replies: 28
Views: 6015

Re: Two simple tricks to month long subjects

Understanding dimensional analysis requires understanding what multiplication is. Just as 14*15 is 14 15s, 14 m is 14 meters. But you can also do 14 pizzas or 14 drinks. If I multiplied the two, I'd get 196 pizzas*drinks. If I divide by drinks*drinks, I get 196 pizzas per drink. From there it can be...
by nichi
Thu Mar 16, 2017 1:35 pm UTC
Forum: Religious Wars
Topic: Is 0 a natural number?
Replies: 35
Views: 12364

Re: Is 0 a natural number?

We have Z^+ for {1,2,3,.....}. So N may as well include 0, lest we have to write N\{0} all the time.

But if you're using English, "nonnegative integers" and "positive integers" are far more unambiguous and thus superior.
by nichi
Thu Mar 16, 2017 1:02 pm UTC
Forum: Religious Wars
Topic: Steering showdown
Replies: 23
Views: 5642

Re: Steering showdown

One hand on 6 by default. Move it up to 10 or 2 if I need to steer heavily in one direction, to 12 if I need to steer heavily in both directions.
by nichi
Thu Mar 16, 2017 12:59 pm UTC
Forum: Religious Wars
Topic: Pi vs Tau
Replies: 19
Views: 4979

Re: Pi vs Tau

Are we going to get all the old works translated, or just note to everyone being introduced to math that if they try to read anything before the year of the switch they should expect a symbol for tau/2? And during the interim it can go either way. Granted, I would hope anyone digging through old mat...
by nichi
Thu Mar 16, 2017 12:38 pm UTC
Forum: Serious Business
Topic: Why is dog fighting morally wrong?
Replies: 60
Views: 6405

Re: Why is dog fighting morally wrong?

Assuming some theoretical stuff like virtue ethics being right for the sake of getting to the question at hand: Love is a virtue. Love being a sort of caring about other beings as intrinsic goods. You can get wrapped up in trying to justify a sort of hardcore consequentialism and convince yourself o...
by nichi
Thu Mar 16, 2017 12:30 pm UTC
Forum: Serious Business
Topic: Breaking Up the United States
Replies: 162
Views: 10672

Re: Breaking Up the United States

What's the payoff here? Taking (collections of) states' rights to the extreme? Sure, you take away the ability for anyone to impose anything on the whole country, but in exchange you're (as others have mentioned) making a lot of people either move or adapt to a country where they are even less well ...
by nichi
Thu Mar 16, 2017 4:43 am UTC
Forum: School
Topic: Math without calculators
Replies: 33
Views: 17148

Re: Math without calculators

Learning algorithms for arithmetic and other such things, sure. I know of no exact simplification for sin(.4). If someone is studying trig they should be able to ballpark it, but I see no benefit in math classes to bringing out a calculator to give a less precise answer. When things start become a r...
by nichi
Thu Mar 16, 2017 4:20 am UTC
Forum: School
Topic: Should I major in physics?
Replies: 11
Views: 2070

Re: Should I major in physics?

I changed majors seven times to no major adverse effects. If it looks like something that will compel you to study hard (sounds like it), then go for it. If you find out later you don't like it, switch.

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