I had a few tomato plants do well in the garden this year. With a pretty good amount of San Marzano, Cherry, and Early Girl tomatoes, juicing and reducing was the only practical way to deal with them. To do it efficiently I like to use a tomato juicer (mine looks something like this). I put the juice in a pot on the stove for an hour or two to reduce it to a sauce. It takes a little time, but if you have a bunch of ripe tomatoes you can make a banger of a sauce. Throw in some Italian herbs, salt, and a few hot pepper flakes and you’ve got my favorite sauce. I’ve been eating that on ravioli for a few weeks now and I think it’s great: sweet (from the cherry tomatoes) and full of flavor.

As far as efficiency goes, it does take some energy if you just evaporate the watery part on the stove. You could also let the water separate out from the tomatoes and just drain it off. That should make the reduction much faster.

He’s referring to the fact that the Effective Altruism / Less Wrong crowd seems to be focused almost entirely on preventing an AI apocalypse at some point in the future, and they use a lot of obscure math and logic to explain why it’s much more important than dealing with war, homelessness, climate change, or any of the other issues that are causing actual humans to suffer today or are 100% certain to cause suffering in the near future.

Which is an issue if those artists want to copyright their work. So far the US has maintained that AI generated art is not subject to copyright protection.