Firstly, this is for creating concrete on mars, where resources are very scarce and making regular concrete is not viable. Secondly, to survive martian conditions, we need to build bases, a lot of very sturdy, structurally sound bases. And lastly, before the potato based concrete, blood was genuinely the most viable solution, being an easily renewable resource. IIRC the martian concrete is now magnitudes better than regular concrete.
Retail stores rarely carry a phone older than two years, as long as they push new phones every year, people will be buying those phones.
OEM’s could have like 3 battery types, mass produce these 3 and offer battery replacement for maybe 30 bucks or less? OEM’s could have like 3 phone designs and update the internals, making each screen replacement maybe 50 bucks or less? Instead each has unique screen, motherboard, subboard and battery combo. My 10y/o nokia has the same battery as a new one, they cost like 5 bucks each.
Needless to say I love the EU for bringing back user serviceable batteries, that’s a great start.