[steve86]

My goodness; all that long-form stuff when you can do an approximation in your head in one second and get 6 or 7.

[House Atreides]

“My goodness; all that long-form stuff when you can do an approximation in your head in one second and get 6 or 7.”
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LOL But that wouldn’t meet “common core” standards.

[OneWingedShark]

My goodness; all that long-form stuff when you can do an approximation in your head in one second and get 6 or 7.

Well, when you screw up that badly -- yes.
(Quite good for showing exactly where the error occurred.)

[yorkiemom]

“My goodness; all that long-form stuff when you can do an approximation in your head in one second and get 6 or 7.”

I like his exactness myself. Engineers don’t appropriate, it just feels wrong not to have calculations out to 3 significant digits or more.