Why do circuit breakers go up for on and down for off?

The extra colours have a confusing effect. Have you looked at the colour blindness test books, the ones with lots of colour dots where you have to tell which numbers are there? There's one which only colour-blind people can work out as it has wavy red and green lines.

This is because the gene for the extra yellowish cones (don't know which one) is on the X chromosome and men only have one of those. If the gene is faulty you only have two working cones; women have two X chromosomes and provided one has the working gene they are all right.

Not convinced.

But wild animals and plants don't use any scheme like that.

Sure, but that's a separate question to why we evolved with some colorblind.

I am tempted to write Bollocks dear boy, Bollocks.

Probably just a defect that is not strongly deselected. Humans are still evolutionary kluges with enormous variation and lots of bugs. There's overlap between features and bugs.

Civilization, things like agriculture and specialization and language, have applied new selection pressures that evolution hasn't caught up with.

My mom liked a horrible smarmy AM station, WSMB at 1350 KHz. 1350 is

Depends which statistic you believe. And trains can only go where there are tracks, so much loading and unloading and messing about at both ends.

I thought all Japanese trains were maglev. You get a refund if you're more than 10 seconds late.

Until they cross a road, then for some reason cars have to stop for them.

A law to prevent you hurting yourself is silly.

Of course we all went on the tracks as kids.

I came across one in a remote part of I think Wales (possibly England) with no lights, gate, anything, just a single lane road going across a track. At night I just drove straight across, assuming I'd see any train lights. During the day I got out and walked onto ther track to look along it. See? People can think for themselves.

And cars crossing never break down. And nothing ever falls on the track. And animals obey signs. Meanwhile in reality.

Yep, most of the colorblind don't even know that they are colorblind until they apply to join the military and discover that they are colorblind and get rejected so clearly there isnt any selection pressure with that.

Not really, more they still breed fine with a very wide variation across the species.

Dogs in spades.

Yes.

More strictly significant genetic defects.

That's very arguable indeed. The reality is that modern humans are brilliant at being able to ensure that those with very bad genetic defects can in fact survive and breed and pass on those genetic defects.

The US uses intermodal transportation. A truck loads freight and takes the loaded trailer to a rail depot or port and the entire trailer is transferred. It may either be a container that is placed on a chassis for truck transport or sometimes the complete road trailer.

I got busted for putting coins on a track to be smashed flat. They tooks us into the station office. We got a lecture, catch-and-release.

Containers go on trains here, but not usually entire trailers. Due to being the first to develop railways, they were mainly built with bridges and tunnels too small to allow that.

Isn't that some weird Apple invention? Apple users are always going on and on about their colours.

If you type in a colour you'll find several different RGB values depending on the opinion of the writer.

I can tell two colours apart if they're together, I hated 256 colour displays.

I've killed 3 mice a day in the last week with 7kV. It f****ng stinks though. Maybe half an amp is a bit much.

Lack of foresight... There may be routes in the US that are restricted. There are trucker atlases showing truck routes where there are no underpasses with less than 13' 6" clearance. There may be something similar for trains.

Related factoid: the Tiger tanks were a little too wide for the regulation tunnel widths so when they were shipped by rail the outer road wheels were removed and a narrow track installed.

My Chemistry teacher once came in 10 minutes late in a fluster. His excuse was his wife (my cooking teacher) was "putting on her makeup with a shovel". She looked like Al Bundy's wife in Married With Children, but way more makeup.

We never painted our Tamiya stuff, as it was often involved in crashes.

I knew mauve fawn and beige and they all looked the same to me. Just light brown isn't it?

Sounds like a French delicacy.