If you read through his "rants" section of his website, you will see he's not a racist, he doesn't call black people "niggers", just people he doesn't like.
I'm not sure this is what he meant, but I think he refers to the temperature of the water. If you lower the pressure, it takes a lesser temperature to get the water to start boiling.
So if you go on a mountain and put a pot with water over a fire, it will start evaporating rapidly(boiling) at a lesser temperature than 100 degrees Celsius, so he needs a more efficient way to transfer more heat into the water to get it to 100 degrees Celsius(normal boiling temperature).
I tried this, but it keeps forgeting the choice to use the classic maps and I always have to go to the options and pick it again. It's not such a big deal, but yeah, it's annoying.
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