What's so painful about estimates of 3 to 30 decimeters?
The units just force too precise an estimate, at least for my less-than-stellar spatial intelligence. (Sure, you can always just take your feet estimate and multiply by 3. But the very fact that you might have to do that is a testament to the greater utility of the foot.)
Nah, you don't need to do that. An average five year old is about a meter tall. Just think in your head how many small children it'd take to fill the length, lying end to end. One kid and up to the knees of the second? That's one and a quarter meters!
That's nice. Now estimate the height of a random adult. Meters are no good- most adults are well under two meters. The next step down is the decimeter, a word which I have
never seen outside of a math textbook. So we're stuck with centimeters, and estimating a range between 150 and 200.
