Nestle is swiss, and kit kat originated from the UK... but i like your spirit.
I'd imagine they would be using binoculars with sun filters during the day, allowing them to see venus despite the sun's glare.
They more likely to be plunged into an accidental nuclear war. We're more likely to be plunged into ww2 part 2: electric boogaloo.
I mean, sure. Not every single calorie you consumed gets absorbed and expelled. Fiber has tons of calories, but our bodies cant digest it so its simply expelled. Its very naunce argument. Thats why i selectively said "enegry dense food" sugars and fats are easily broken down and absorbed. I was not intending you to interpret it as meaning if you eat a gram of uranium, that your body would suddenly gain 18 million calories.
Its both. Calorie in. Calorie out. Any calories not used will be stored for later. Keep consuming more than used, than more and more gets stored. The problem with modern diets is food is very enegry dense and a lot of people dont live active lives. Our bodies have not adapted to such lifestyles. Its adapted to survive until the next hunt not the next doordash delivery.
For propulsion, a small steam engine can work. And it doesnt need much power, so even an earlier crude engine would suffice. And if you have a boiler for the steam engine, you can use it's heat to heat air for a balloon. Now in reality a steam airship would require a very large boiler and balloon, and certainly would not be able to carry much fuel to go far. But it's atleast within plausiblity to allow bending to allow for gameplay. Just like you can ride elk... sure you could but in reality they'd make for a terrible mount. But its a cool thing for gameplay.
What ever you do, dont tell RFK about raw cockroach milk.
There are upsides.... humanity kills themselves and earth will recover eventually.
Plot twist, the homeless man broke into everyones car because they didnt pay the insurance.
The space shuttle launch fuel tank was only painted for the first two launches. They stopped because the paint weighed 600 pounds and didnt offer any real benefit. So yeah, a little bit of paint does add up.