Depends on what you mean by "changing how you do things". sometimes saving money means just buying the exact same stuff but cheaper. Like I still buy name brand ketchup but I get it at the dollar store or use a coupon. The real savings kick in when you switch to store brand beans though. That's not changing your life, it's just swapping a label. So no, you don't have to overhaul your whole routine to save a few bucks.

Huh, I always heard heaviest stuff goes in the middle of the pack, not the bottom.

Who even packs extra clothes for a basic job anymore?

...I mean, I get it, it's interesting and all but how often are you really out there in extreme cold using power tools for hours on end? Feels like one of those things that sounds huge on paper but in real life nobody's running a saw at minus 20 degrees for a full work day. Maybe I just don't live in a place cold enough to care that much. It's cool they've got the tech figured out, but I dunno if it's mind blowing or just... good engineering.

Man, I had a buddy who nearly threw his starter in the trash after two weeks of flat nothing. He switched to bottled water on a whim and it basically exploded overnight. Never would have guessed the tap water was the enemy but he swears by it now.