How to change the size of an object without flattening it or making it "fat":
(Techie Speak: How to change the size while maintaing the same aspect ratio)

If you change the size of an object using the "change size" handle in the halo (that yellow box in the lower left corner).
You can keep the aspect ratio the same by holding down the shift key while you drag.

Want to test this idea?
  1. Drag the objects width and length watchers onto your world.
  2. Add a variable that divides the width by length
  3. Change the size using the "change size" handle in the halo, with and without holding down the shift key
  4. Does the variable you created in step 2 change?
;)