Humidity Control in Cooling

The AC removes the humidity though so it is a non-issue indoors.

Internet says to keep humidity below 50%, so a dehumidifier.

Dehumidifying & ventilating will be more effective anyway.

a dehumidifier would probably be more efficient than heating and cooling the air...

Cold humid air (outside) becomes dry when heated (inside).

Prove it that it will work in a very humid environment or this product just make dry air from already dry air.

If you rely on ventilation for cooling you're just constantly pulling in high humidity air from outside and the dehumidifier will do nothing.

Maybe, but most have cut offs for when the humidity gets to normal levels. Even if they don't have that, they become less efficient at removing water when there is less in the air, so you would need a tiny space to get that low (the heat they produce would start a fire first)

Maybe it's time to harness the power of humidity.

This doesn't work terribly well in humid climates as you don't get as much of the evaporative effect as you would otherwise.