I thought most grandmas knew that car batteries definitely belong in a beautiful blue ocean, especially ones with little to no car batteries. Is a life without throwing car batteries into the ocean even worth living? If you need someone to talk to, or even just to go throw car batteries into an ocean with HMU.
Fun fact, doing this could create a monetary liability far in excess of the value of your home and property.
It's also not going to be particularly healthy drinking if your home has its own well rather than being on city water. Which where I live, is very common for detached homes.
It's the same mindset that lead to using dispersants on the oil spilled by deep horizon. It's not about science, it's about dealing with a problem that has no easy good solution, so instead of a good solution, just something is done.
Oil companies probably thought that people would be more resistant to buying oil if it needed special effort to dispose of properly. Maybe they didn't even have a good way of dealing with it at that time and just hadn't dumped enough of it yet to realize that it would eventually run down into the water table. Though going by how they handled realizing that burning oil at all was going to have a huge effect on climate, they likely wouldn't have cared even if they did know.
Just like deep horizon wasn't an environmental problem for BP but a PR one, thus they selected solutions that looked like they were trying, that they shouldn't be liquidated to fund a real cleanup effort, and that new deep water oil wells were still worth the risk. Think of all the retirees that they are holding hostage because they put money towards funds that bought BP stock and derivatives!
Because he isn't working out "for her" or because he doesn't think his grandma is strong enough to throw her own car batteries in the ocean?
If A) I'm assured women aren't dressing in a certain way or doing makeup "for men" as well, they say it's "for them." Unless this is misandrist, I don't think working out "not for women's approval" is misogynist. Doing things for other reasons than to garner the sexual attraction of the opposite sex seems like an acceptible path.
If B) It could just as easily be that he isn't doubtful of grandma's abilities because she is a woman, but because she is old. Maybe it's ageism at play instead, or maybe she asked previously if her grandson could assist with routine car maintenance such as a battery change.