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Useful Mental Models (2016)

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21–30 of 75 posts

Re: Useful Mental Models (2016)

#21

It would be good to include some mental models for attitude towards money. Things I have noticed about myself: No problem paying for something that absolutely needs to be done. E.g. repair a leak in the roof. Replace something. Don't notice money spent on regular monthly payments. E.g. mortgage. Don't notice $1000 spent as 50*$20 but more frightening to spend $1000 at once. Fear of loss when investing is big. It feel…

Earn $1000 = $500 after taxes. :)

Re: Useful Mental Models (2016)

#22
Efficient market hypothesis

That's a kind of ideological way to phrase the situation. It's easier to just describe the "stable market hypothesis"; however things are organized is the way that market structures have stably gone and thus can't easily be changed (whether market are efficient or not). This includes all the points in the parent plus the point that you may have improved on app/gimzo X significantly over the weekend but the market probably still won't jump to your solution easily because of mind-share/network-effect/existing-investment/market-leader's-connection-to-customers/etc.

Re: Useful Mental Models (2016)

#23
post #21

It would be good to include some mental models for attitude towards money. Things I have noticed about myself: No problem paying for something that absolutely needs to be done. E.g. repair a leak in the roof. Replace something. Don't notice money spent on regular monthly payments. E.g. mortgage. Don't notice $1000 spent as 50*$20 but more frightening to spend $1000 at once. Fear of loss when investing is big. It feel…

Earn $1000 = $500 after taxes. :)

I use the multiplier the other way around. When I am about to spend $100, I remember it’s about $150-160 in earned money.

Re: Useful Mental Models (2016)

#24
Front page test – an ethical standard for behavior that evaluates each action through the lens of the media/outside world.

Example: What would happen if HN found out we’re mining our users’s IMs?

I feel like I might be okay with it if was a university (.edu domain) and I knew it was anonymized. Not sure I'd be okay with a random blog doing that.

Re: Useful Mental Models (2016)

#25
Great list. Incidentally I started an Instagram and Twitter account this week, to stick to my resolution for continued learning, where I plan to post one mental model per day. Please check it out if you're interested, and I'd appreciate your feedback.

https://www.instagram.com/mental.models/ https://twitter.com/learnmodels/

Re: Useful Mental Models (2016)

#27
Most of these are really good, especially productivity and time estimation.

Some I do not agree with (although perhaps the model presented is useful depending on desired outcome).

-Efficient market hypothesis: Markets are not fully efficient and the state of the world is not optimal. Thus opportunities exist. It's our job as engineers (and business people/humanitarians/writers/philosophers etc.) to recognize and correct these inefficiencies. Look for them. Its not easy and thus is called work. Do it anyway.

-Base Rates: People are over-optimistic. They are also bad at finding similar things to compare.

-Emic vs Etic: Dangerous form of mental laziness. While it might be "efficient" it leads to underestimating people and phenomenon, missing out on valuable information and, as the old saying goes, judging books by their covers. Sometimes valuable lessons and opportunities can be found in strange places. And often it isn't even what is said or even "anti-lessons". Better to remain somewhat open and listen without preconception and with consideration as much as possible.

-Bias for Action: Unsure about this one. Looking back I'm not sure if I regret more actions I didn't take or actions I took that were mistakes. I think probably the second has had more negative impact. But I've been a fairly active person, maybe for a less active person it would different. In my case though very often doing nothing would have been the better choice.

-Charitable interpretations: These do make relationships go better. Especially for people who take advantage of others. I'd recommend outward charitable interpretation, inward cynicism. It's usually more accurate for prediction. But cynicism does make a person unpleasant and negative so best not to display it.

-Global Utility: A dangerous precedent. But sometimes yes, indeed needed. Be extremely careful of deals with the devil though and prefer principal, honer and fairness as much as possible. The long term gains are usually greater. The long term effects of short term utility can sometimes be fatal.

-Reasonable Person Principal: Meh "reasonable" can be whatever a group decides. It's not always good. However, no need to keep someone around who doesn't fit the agenda. Hopefully you don't see them in the 30 under 30 list in a few years though.

Otherwise it's a pretty good list.

Re: Useful Mental Models (2016)

#30
post #21

It would be good to include some mental models for attitude towards money. Things I have noticed about myself: No problem paying for something that absolutely needs to be done. E.g. repair a leak in the roof. Replace something. Don't notice money spent on regular monthly payments. E.g. mortgage. Don't notice $1000 spent as 50*$20 but more frightening to spend $1000 at once. Fear of loss when investing is big. It feel…

Earn $1000 = $500 after taxes. :)

More like 800, I don't know why people like to exaggerate how much goes to taxes. Median marginal federal tax rate is 15%, which means on average it's less than that.
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