Viewing profile — liuhenry

Lithos Carbon | Full-Stack Engineer, Data Scientist/Engineer, and Applied Statistician | Hybrid (SF Bay Area, Seattle) and US Remote | Full-time Hey everyone — we're a startup that…

Lithos Carbon | Full-Stack Engineer, Data Scientist, and Applied Statistician | Hybrid (SF Bay Area, Seattle) | Full-time Hey everyone — we're a startup that's scaling a form of du…

Lithos Carbon | Founding Full-Stack Engineer and Data Scientist | Hybrid (SF Bay Area, Seattle) and US Remote | Full-time Hey everyone — we're a startup that's scaling a form of du…

Which definition do you mean? SPX is a cap-weighted index, but that's very different from "50% of capital outperforms the index".

I don’t think the parent response is correct, though, if by profit (colloquially) we go by earnings that could be distributed to shareholders. Sure, gross profit would not include …

> everyday materials usually obey the Pauli exclusion principle In the everyday case, this is pretty much always in reference to electrons (which are fermions). Even when we're tal…

The ELI15 explanation is that at these temperatures, quantum mechanical effects take over and the atoms themselves become indistinguishable from each other. They no longer have a d…

Right, quantum jumps as used here is actually a specific technical term. It seems like the parent comment takes it to be a lay analogy, but it’s from a formulation called quantum t…

I'm trying to understand the concern but most of my worry around "historical financial data" would be actual transaction-level information, not rough summary figures to estimate a …

I grew up in the US and (unfortunately) this was the first time I'd heard of such a concept. I did some research and "prison furloughs" became a key political issue in the 1988 US …

I understand what you're saying, but honest question: why is it helpful to add this caveat?

It's ~£500 payments per month (which covers both interest and some of the principal). The total interest comes out to £1,473.

I'm sympathetic to this point, but won't it continue to be a problem as long as airlines still allow pets? The DOT ruling cites an industry statistic that 784k pets and 751k ESAs w…

It's worth noting that the Department of Transportation final ruling devotes a section to economic impact [1], and estimates a ~$55M increase in fees paid by passengers traveling w…

Logically, the "surcharge for potential damage" should be a security deposit, or fines and penalties against specific behavior. You'd have the same issues with tenants that were ex…

The risk to PayPal is that Visa/MC no longer allow PayPal to transact on their network if aggregate chargebacks exceed some percentage. I don’t know how the exact details iron out …

Fair - I don't own a car myself, but the US DOT reports 24.4 mpg in 2018 for cars, SUVs, vans, and light trucks shorter than 121 inches. (This is an estimate of vehicles on the roa…

US Department of Transporation says the avg. American drives 13.5k miles per year. Using an average mpg of 21.5 mpg (if the average age of a car is 12 years), this comes to ~628 ga…

Something I always find pretty mind-blowing is that a physical thin lens can also perform a Fourier transform. This (generally) only applies to coherent light, so it's not somethin…

This doesn't quite get to ELI5 but hopefully is understandable to an HN audience (please feel free to correct if I've gotten anything incorrect): "Topological" and "magnetic" are t…

You're both correct but talking about different situations. The original post is saying that some people may discover they've contributed too much to their IRA after doing the tax …