While it would he handy to have everything integrated, it’s not always vital. We don’t need to convert kilograms to seconds very often. Artificially enforced systems have always had trouble replacing older anachronistic ones that are otherwise still useful. Ask people in the UK about their cars’ efficiency and you’ll often get an answer in miles per gallon.

There’s nothing magical about 10, either, other than the accidents of evolution that left us with ten fingers. Base 12 is also extremely convenient, and comes from Sumerians counting with their thumb against each of the three joints on 4 fingers. Go through that process once for each finger on the other hand, and you get 60. And of course, in any industry where things are packed into packages, like nearly everything we buy, dozens fit better than tens. 60 divides very neatly into many convenient and geometrically simple fractions, and a lot of what we do with circles benefits from this.

We probably would have been better standardizing on a base unit that’s a power of two, which has more mathematical weight than ten does.

It’s an invasive species that has been working its way west across North America. I hadn’t heard of it in SoCal yet; this would be a drag. OP, what lake was it in? There may be rangers or similar authorities you could notify so they could look.

That’s not the least of what makes me unhappy about the Google search experience lately. The thing I don’t like is how much it sucks. Like, really really sucks. It was the paradigm of mind-boggling usefulness at one point. Now it’s an ad server with occasionally marginally relevant results.