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Ask HN: What's the most valuable thing you can learn in an hour?

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Re: Ask HN: What's the most valuable thing you can learn in an hour?

#921

Learn how to use Google Search effectively. It's a "language" we use every day. Mastering its few features can make any search so much more effective and precise: https://support.google.com/websearch/answer/2466433

interestingly "jaguar speed -car"

returns the speed of a ship called Jaguar, not the animal's

Re: Ask HN: What's the most valuable thing you can learn in an hour?

#923
post #492
post #460

Learn very basic weightlifting, like how to design sets (12 or so light reps to warm up, aim to run out of energy around 8 reps for "production" sets, do about 3 production sets a couple minutes of rest in between). With only an hour, limit to relatively safe machines (LOL at learning olympic squats correctly and safely in only an hour of coaching). If you need motivation for why human bodies need to lift, "The Barbe…

Alternatively you could just read Starting Strength. The only exercise that's difficult in technique is the Power Clean, and you can replace it with Chin-ups. Even Rip does it in his Practical Programming book. Seriously though, your stabilizers are important and machines do nothing for them.

Its all in what you want to do. The barbell prescription book goes into great detail on medical research on the effects on blood chemistry and general health of the ratio of muscle to fat and so on. For that, it doesn't matter if all the muscle in my body is in my left calf or stabilizers or whatever. On the other hand SS and similar IS vital if you're going to work a blue collar job and lift and install plumbing all day long at a construction site. Another topic is the machines make it virtually impossible to hurt yourself no matter how dumb you are WRT liability insurance reasons, so they're quite safe, whereas everyone doing free weights eventually ends up in the ER self inflicted.

Overall the machines are BOTH a good gateway and a good terminal activity. Wanna move up to free weights, can do! Wanna just have better blood sugar and osteoporosis outcomes for the rest of your live and never move up to free weights, can do!

Free weights do nothing for stabilizers anyway. Run the trig and static engineering numbers. Sine of 10 degrees is about 0.2 so for people starting out, benching 50 pounds with ridiculously bad form only loads the stabilizers (triceps, maybe?) with 10 pounds at 10 degrees off ideal, and even noobs start triceps extensions way more than 10 pounds. And "experts" have perfect form so there's "zero" load. Due to trigonometry you can't work your delts merely by using ridiculously poor form when bicep curling. The whole stabilizer issue is a bro-science thing that requires not running the math or engineering statics vector diagrams.

Re: Ask HN: What's the most valuable thing you can learn in an hour?

#924

Earlier quoted context omitted.

There's also Quizlet which is similar but I find it better because you can preview entire pre-built card decks on it which makes it searchable on google https://quizlet.com

Quizlet is great if you're looking for pre-built decks, as you mentioned. As far as I'm aware, there's no spaced repetition feature, which is the main value in Anki. Also, one of the values to me in using Anki is creating the cards myself. It allows me to mull things over and decide what part of a fact is important, and how I'd like to recall it. Relatedly, the value isn't necessarily in reading someone else's study…

Like you, I used to think that creating my own decks is better than using someone else's.

But then I listened to a podcast episode, by The Learning Scientists, in which they say that research evidence shows that your time is better spent doing only retrieval practice (reviewing flashcards) than creating cards + retrieval practice.

Retrieval practice and spaced repetition (which is what one is doing when reviewing cards with Anki) are the most effective methods for learning for which we have strong evidence, according to the same podcast.

Re: Ask HN: What's the most valuable thing you can learn in an hour?

#925

Soldering is a useful skill that's easy to learn the basics of, and can be done in an hour. You'll need to have bought a basic soldering kit before you get to it though. :)

I agree on this, but even better, stick welding. I learned how to stick-weld in my shower (since it was the only place i could do it without risking of burning down my apartment) https://www.youtube.com/watch?v=l-Ro9VqLwfU

Oh, interesting idea. Recently learned to do gasless MIG welding, as it's pretty easy and the gear is cheap. Similar to stick in that way.

Wanted to learn it a few years ago, but didn't have a suitable place I could do so. Hadn't thought of "in the shower cubicle".

Re: Ask HN: What's the most valuable thing you can learn in an hour?

#926

If you've been married for a while, learn who your spouse is now . (I mean in a good way, by taking an hour to rediscover what his/her hopes and dreams are, what interests they've gained / lost, etc.) He/she is probably a pretty different person than the one you married. It's easy to overlook that.

The Marriage Institute has the best relationship technology that I've found:

http://gottman.com

Easy to glean the high level techniques in an hour. eg avoiding the Four Horsemen of relationship killers. But I've been working on my technique for years and feel like I'm just getting started.

Re: Ask HN: What's the most valuable thing you can learn in an hour?

#927

Earlier quoted context omitted.

Binging with Babish has a great series on basic dishes https://www.youtube.com/watch?v=xBGoJUxxRqU He covers the American omelette which is my go-to. Usually with spinach, red bell pepper, red onion and sometimes mushroom filling. Often with some old cheddar and they are monstrously simple to make mediocre and not too difficult to make very well.

I'm a big fan of Babish! I'd also recommend the Bon Appetit Youtube channel https://www.youtube.com/user/BonAppetitDotCom and Chef John from Food Wishes https://www.youtube.com/user/foodwishes

It's Alive from Bon Appetit is a really good serie. And Brad Leone is amazing

Re: Ask HN: What's the most valuable thing you can learn in an hour?

#928

Earlier quoted context omitted.

I think a seriously overlooked application of this principle is in nutrition and dieting. Over- or under- eating by a small percentage of your required intake might not have a discernible effect immediately but really adds up over time, both for weight loss and gain.

It is not how it works at all. The fallacy here is that a human body is a machine with well-defined intake and output. How would one even know what is "exactly" the right amount? Over a year we consume 1 million calories. If one were just 0.1% off of systematically eating more (or less) than required then according to your model one would end up being 200 pounds fatter or 200 pounds leaner ... do you think that anyon…

1 billion*

2 - 2.5 million calories a day is normal for people with a normal level of physical activity.

Re: Ask HN: What's the most valuable thing you can learn in an hour?

#929
post #358

Earlier quoted context omitted.

The 'rule of 72' is a quick and easy rule of thumb to determine how long an investment doubles, and improve how you think about compound interest. For example it takes approx. 10 years to double an investment at 7%, or 7 years at 10%.

We are currently in a world where it is very difficult to find interest rates >2%. I found a tezos staking pool at approximately 5% recently.

In India is between 7 to 8 %, it was even higher a few years ago.
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