Are you saying your former employer let you keep your unvested RSUs which subsequently vested at the IPO? (I've never heard of anyone getting to keep their unvested grants after separation.) Or were you still an employee during the IPO and left the company between then and now?

So who makes the decision to do that?

I think most people are missing the point about accountability and thinks, in typical American fashion, about punishment. Accountability is about being responsible for outcomes. That may mean legally responsible, but I think far more important is the knowledge that "the buck stops with me", someone who is entrusted with a task and knows that it is their job to accomplish that task. Said person may decide to use a computer to accomplish it, but the computer is not responsible for the correct outcome.

https://www.afmc.af.mil/News/Photos/igphoto/2003098938/

But a commuter train, by definition, starts and stops a lot so it makes sense that a large fraction of the energy used would be for acceleration.

What other people have been doing over the past 40 years is attempting to devise tests for these various dark matter candidates. We know, for example, through lensing observations, that MACHOs/brown dwarfs don't exist in the required numbers and that the neutrino mass seems too low. The problem, of course, is that there are only so many ways to try to observe matter that is truly dark.

I agree, though, that, in the end, it may be that dark matter will be an untestable hypothesis, just like quantum gravity or whatever.