You might check out recipes for Indian lemon pickle. It’s a way of salt fermenting them that results in a spicy delicious condiment that can last for ages.
Weather/room temp wise we probably never will. I’d rather think of my environment in terms of 0 to 100 than in terms of -18 to 38. For science and engineering, Celsius is ideal, and I can convert between the two in the very rare occasion I need to because I’m not an idiot who can’t do basic math.
50 is great for just a light jacket and jeans. You’ll never get too hot, you won’t get too cold. So, yeah, as long as you’ve got clothes on it’s pretty perfect.
If I want to wear less clothes then 70 is a good bit better, but 50 is damn comfortable.
Onboard are >=2 bits of code. At least one of those is a specific system trained to recognize a “wake word”. This specific system (ostensibly) doesn’t send anything to an outside party. Its entire job is to recognize one wake phrase: Alexa, Ok Google, or Siri, and then if that wake phrase is used it responds and tells the second system to listen. As you can imagine, this is a pretty easy job to get right 80% of the time. So that can be put on a chip. So then it does its job, and it’s the second system that sends everything to an internet service for whatever reason.