And the airplane?

That was considered impossible that you could fly y the force of a heavy
engine block.
Yo know how much an internal combustion weighs???
FLY it?!!

Dad rmembered the Wright Brothers coming to town on their lecture tours.

When Dad was dying he and I were watching some robot landers on the moon
I thnik.

He tried to express it to me, how he felt, what he saw.
People would runout of their houses when an airpane flew over so they
could see it.
Now here he is, dying and watching robots on another world.

Back to grammar school again. We used to pour ammonia or something
on a piece of coal and within a few hours crystals would grow out of it
and climb up unitl they broke from their own weight. These fast growing
crystal were very fragile. Diamonds, and even quartz crystals, take
thousands of years to grow in the earth. Like those fragile crystals
growing up out of the coal, civilizaton has shot up fast in a century.
But, in this case it's unnatural. It has been done by having our natural
instincts blocked. There are secret social engineers. A few have
struggled to compensate for this blockage and thereby invented the
mechanisms of advanced civilization, shooting up in ever increasing
parabolas aganst nature. But, life has unceasingly got worse. The
complicaions just add to the increasing frustrations. The secret social
engineers have built a dam. And we are the Dam Busters to wreck it!