High opinion To have a notepad, laptop, PDA, A/V recorder, etc. in every room in your house, in your car(s), at work, etc. means to have a very high opinion of yourself.
Large boxes Software being shipped in such large boxes is yet another proof of human materialistic nature.
Calculus If you’d need a calculator to divide 40,000 by 2, then you’re spending too much time in front of a computer screen.