> Yes, it takes longer. But if it's worth doing, it's worth doing right, even if it takes twice as long, no?

This is debatable, but either way it is the opposite of the purpose of this article, which is about 'efficiency' in mowing.

Also, even if you do it very carefully, and walk a perfect 90 degree turn, you are still going to have an arc. You wont mow the whole 'square' like in the game.