Personally I'm more likely to believe 2 + 2 = 4, something I can easily check to my own satisfaction using four objects, than I am to believe the Axiom of Choice.

A vimana, which from googling appears to be some kind of flying temple in Sanskrit myths, does not appear to have actually existed.

I'm not convinced we can. For starters, the nuclear weapon inventory is a lot smaller than it was back in the 80s when those sorts of statements were popular. And secondly, as I understand it, it was always a bit of a lie, an estimate based on some silly assumptions (e.g. that everybody in the world lives in cities), which in repetition eventually lost those assumptions.

And yes, I agree with the other poster that it's pretty much impossible to kill everyone on earth with climate change.

Species-ending diseases I do worry about, but maybe that just means I don't know as much about immunology as I do about nuclear weapons.

It's just that doing something impossible is tricky.

The percentage of alcohol users (ie almost everybody) who become alcoholic is quite low. The percentage of heroin or meth users who become heroin or meth addicts is very high indeed.

Alcohol still of course does plenty of damage, unsurprisingly since it's the only such substance which the majority of the population consumes. Maybe the world would be a slightly better place if we hadn't started drinking booze all those thousands of years ago. But I don't buy the idea that because we accept one particular form of stupid behaviour that we should tolerate all the others... any more than I buy the idea that just because I tolerate my unemployed brother living in my apartment that I should open the doors to let everyone else live there too.

For older children and teenagers it's probably better safety equipment, particularly in cars. I guess we've also got improved treatments now for the few diseases which actually do kill children, such as various cancers.

But hey, it's still good news, even if "healthier" isn't the way to describe it.

Only on the assumption that "being married" is uncorrelated with "starting some weird travelling hippie Jewish tradesman cult", which I assume it isn't. Having a wife and family obligations tends to hamper the travelling-and-preaching lifestyle somewhat.

Also, people who spend their 30s claiming to be the Messiah and getting crucified for it probably spent their 20s being a bit weird as well, even if nobody bothered to write about it.

It's true, when terrorists attack Israel (as they so regularly do) they don't usually use guns. But nor do they use knives. They use explosives.

Attach it to a normal-sized vehicle and get 100 mpg under realistic driving conditions, and I'll be impressed. ('til then I'll be internet-snarky!)

There's single farms bigger than a lot of countries.

"Suppose you have a bunch of flowers in a field, and they're planted so that the east-west direction corresponds to the diameter of the flower and the north-west direction corresponds to the length of the leaf."

"Huh?"

"Suppose you have a bunch of data points in an n-dimensional space"

"Oh, gotcha"

If my watch always says it's 3:22, regardless of whether it is or not, does that mean it's never 3:22?