to be perfect.
80. well, to know exactly i think it is impossible, maybe if i take a ruler, i might be able to do it perfectly.
81. you don’t need a ruler to do it.
82. but with the stripes like that, i can’t do it. i need a ruler or a calculator or something, otherwise i can’t know exactly.
83. forget the ruler and calculator, all you need for this problem is your brain. obviously if we are unable to solve the problem where we are right now, we made a mistake in our path earlier. let’s go back to the time when we decided to cut the squares. do you remember 