New habits
One of our consultants describes the inefficiency of moving.
Well-engineered
A question of characters
Computer language change
We notice some limitations of books, as well as their usefulness.
Color pictures
Four elements, four humors
Before the revolution
We conclude that it can be useful to teach something that is actually wrong.
Degrees of difficulty
Impossible, inevitable and in between
Some actions in science fiction are much more difficult than others.