Disagree with adding them by default. I focus on the main entry points like doors first. Glass breaks are often extra cost for little gain in most homes. Every system should fit the real risk, not just cover everything. I've seen too many sensors go unused when money could be better spent on better door locks or cameras.

Dumping out serums is just security following rules. Your shelf life concern is minor if you reseal them quick.

Seeing those medieval tools at the Museum of London really changed how I see history. Like @oliviar65 said, they show daily life better than shiny objects. I'd probably injure myself with an ancient saw, but I love the humble story.

Imagine the look on his face when he got home empty-handed. All that effort to keep the butter cool, and he forgets it anyway. Now we're writing papers about his simple mistake.

Absolutely right, you really don't need much to start. Just grab a free code editor like VS Code and you are set. Focusing on the basics matters way more than your gear.