Keith W writes:

And yet people survive in Asia and Africa without AC,
refrigeration or fans

Actually, A/C is extremely common in Asia. Singapore is famous for
its extensive use of A/C, in particular.

Hot climates without A/C are very primitive, and are likely to remain
so for as long as they don't have A/C.

Really

How precisely does a fan manufacture water ?

It doesn't. But it speeds evaporation of sweat by increasing air
movement. The sweat thus evaporated increases the amount of water
vapor in the air, thereby increasing relative humidity.

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