4 ms·

Well, children can design pyramids using sand.

• fluxby 9y ago
  Yeah. Only those pyramids are about knee high and last for about a day. :) The great pyramid stood for at least 5000 years.
  • deepsun 9y ago
    You said "design", not build. My point is that designing pyramid is not really that hard. Building it is totally different thing (but still doable by thousands of uneducated slaves).