F4lcon

joined 1 year ago
[–] F4lcon@discuss.tchncs.de 1 points 1 year ago* (last edited 1 year ago) (1 children)

People will find alternatives. You can't stop people witj adblockers from using YouTube by blocking adblockers - no more than you can stop piracy. People just build better, more resilient ways to bypass things. This decision has good understanding of business but not psychology.

The only real way is to make it more convenient to use YouTube with ads, so no one goes for adblockers anyway.

[–] F4lcon@discuss.tchncs.de 0 points 1 year ago (1 children)

Lots of skills in the world, some more useful than others.

[–] F4lcon@discuss.tchncs.de 0 points 1 year ago (3 children)

That's impressive. Mental math isn't one of my talents to be honest. And let's agree to disagree about the disinformation.

[–] F4lcon@discuss.tchncs.de 1 points 1 year ago (1 children)

That's interesting. I imagine if you do that long enough you'll just approximate with pi intact as well intuitively.

Anyways nice conversation.

[–] F4lcon@discuss.tchncs.de 0 points 1 year ago* (last edited 1 year ago) (5 children)

I don't think you understand what infinitesimally means! It means the opposite- you want to use 'infinitely' there. Because you're kinda agreeing with me otherwise xD

Now, not being a condescending asshole, I really take issue with you calling an approximation a 'lie'. And honestly, who's multiplying decimal points mentally? That's difficult. Use a calculator. Want to avoid calculators for an exam? Simplify! That's why they use 5 and not 3.14.

[–] F4lcon@discuss.tchncs.de 1 points 1 year ago* (last edited 1 year ago) (3 children)

What I mean is, if you're using 3, you're approximating, heavily. If you do anything critical using that value, it's as bad as using 5 really, imo. Is it really the case that 3 can be used casually? Like in what, workmanship, crafting or something else?

Personally, I would say that pi should be presented as 3.14 and calculators should be used, there's no reason to fear less than elegant numbers xD. And no, that's not close enough for most engineering work, as an engineer we don't usually approximate that much despite the memes, since you have to reduce the margin of error as much as practical. You generally don't even approximate, just leave it as pi the symbol for the most part since in the end you won't calculate it manually. The errors stack up the more you use the value. Eg, multiply an inaccurate value of pi by pi and the error you get is exponential.

That aside, I think 5 is more elegant than 3 so if youre approximating to avoid the cumbersome numbers why not go for elegance instead of accuracy? xD

[–] F4lcon@discuss.tchncs.de -1 points 1 year ago (5 children)

Lol, my philosophy is exactly yours. Allow simplification as necessary, because to do otherwise is a pointless uphill battle. Only use as much accuracy as you really need.

In this case, it doesn't matter if pi is 3 or 5 or 30. It's just for teaching purposes. You would need critical thinking to determine how much simplification you can do, which is much better taught by simplifying things differently as you need, rather than just keeping pi as 3 and saying that works everywhere.

[–] F4lcon@discuss.tchncs.de 1 points 1 year ago

Of course. They already use it like it's some kind of hack. Make it official. Teach them the ins and outs of Wolfram. Better than memorising and regurgitating information, no?

[–] F4lcon@discuss.tchncs.de -4 points 1 year ago (7 children)

So? You think you'll get the correct result by using 3? Or 3.14? Not quite. You can only get infinitesimally close to the correct result by increasing digits of pi.

And of course, if you really need that circumference for something critical, guess what? You use the things people developed for this very problem, software packages, and so on. And of course, you get it double checked, triple checked.

If it's assume pi is 5, it's not misinformation. If they point guns at kids and say it's 5 for real, then yes.

[–] F4lcon@discuss.tchncs.de 55 points 1 year ago (45 children)

It's to make the numbers simple because they aren't important, the methodology is

[–] F4lcon@discuss.tchncs.de 1 points 1 year ago (2 children)

Which has practically nothing to do with Chile lol more like Peru / Bolivia

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