one thing that I would say is if you are building a product, or if you are trying to achieve anything, try to do it quickly, and make quick decisions, and move fast... Not just so that you will make progress fast, but when something kind of slows down... Like, if I was a year into Actual - when you've been doing something for a while, it's really easy to just keep that pace. It's really hard to -- I don't know, if I have a problem on my house, like fixing a toilet that's been broken for a year, there's something about the psychology of it that's like "I'll fix it next week. It's already been a year, I'll fix it next week." Whereas if it broke yesterday, I'll probably go out to Lowe's this weekend, come back, it's a 15-minute fix, and I'll fix it, right? There's some psychology there that's interesting, where if you aren't acting on things fast, they just sort of become this pile of responsibility behind you that you just sort of ignore. I think that's one thing that sort of happened, to me at least. It's like, "I've already been working on this for so long... Let's just keep building a couple more things."

over the past few years as well, we've seen this real anti-science kickback

Based on that lived, visceral experience, I’ve tried to pay more attention to the feeling of momentum when I get it, and really lean into it.

We might stumble across the above unanswered HQ&A note. Giving us a starting point can use it as a springboard to make the research and writing process faster. That's all part of achieving more with less by using yesterday's momentum.

The “no-snaps” ship already sailed years ago…you folks missed that boat. It’s too late to wish for a return to the past. Snaps in Ubuntu have been happening for years already, and will continue regardless of any opinions expressed here.

Similarly, “momentum” is only meaningful as a materialarrangement involving movable parts.

there is a natural vector space preserving isomorphism between the space of functions on I< and supertranslations on Spi, and that functions on l< which thus correspond to trans-lations are of the type (f(k))(1)) = ka1)a for some vector ka in the tangent space of iO. Consider the linear mapping f(k) -~ r 2 Eab(Dbf(k)kamndSW'n . s (23a) from the space of translations to the reals, where S2 is a 2-sphere cross section of the hyperboloid. Using the definition of f(k), it follows that DaD/Jf(k) '" -f(k)hab• Thus, D'lf(k) is a conformal Killing field on l<. Since Eab is both trace and divergence free, it follows that the integral in Eq. (22) is independent of the choice of the cross section. Thus, we have obtained a conserved quantity which takes values in the dual of the vector space of translations. This is the total 4-momentum. It is not difficult to show that this conserved quantity is essentially the same as the ADM 4-momentum. 6,3 (That is, the two agree when both are defined. )

the ADM pw can be written in the Ashtekar-Hansen form [lo]?: ppXp = lim (1 (-det g)l/2~wvapXpxYRnPpu dxP A dx" r+m r=constant d((-det g)'/2&,,,px"XpgaYT~p dxp) (32~)-' +2 I r=constant ) = lim (i (-det g)l/2R,,apXpx" dS"@)(16~)-'