The "Should I Get This Slave" Thread

[weaw]

Stay here please: Right answer usually the result of dialogue, instead of single opinion. ;)

Useful info, in my opinion, is not the direct answer, but much more the answer to the question "Why?"
//How far will drive the bike at a speed of 2 km/h for 2 hours? The right answer: 4 km. But we need to say it's 2x2. But not 2+2 or 2^2 though these answers gives right digits too...