you would need to spend 6 months programming 
     before you could look at RangeCheck

Except that's sunken cost for education that's paid only once. You also need 12 years to go through high-school and another 3 years to get a BS.

RangeCheck is as trivial as counting your fingers. Counting reliably is learned in the first year of primary school, does that mean that counting isn't trivial because it took a year to learn?