Humans seem to have a special mental gap when it comes to mountains. It’s warm and sunny so they go up in flip-flops and tiny short shorts, but on the actual mountain it’s freezing cold and often raining and they require rescuing because at some point they either fall over due to trying to wander around in what are essentially plastic slippers, or they’re too cold and they can’t carry on.
We know that the temperature drops as you go up and yet somehow that seems to fail to register for people.