Sinking in sand
a desert problem
so a wise engineer
studied the camel
developed a ratio
noting the camel’s foot square inches
related to its weight
worked!
No more sinking in the sand!

Giant harvesters called combines
had a need
power at any infinite slow speed
a pump, hydraulics, a part answer
then electric switches, opening valves
then computers, controlling switches
Hmmmmm
Like the human body
brain computer, controlling valves
heart pump hydraulics
control slow…and fast