neutralize gravity, you could get all the answers, except to the 'dead
distance' question.

"For instance, there's the matter of whether the human body would even
function without gravity. All down through the stages of evolution,
man's organs have been used to that downward pull. Take away gravity,
and your whole body might stop working. Some of the Aero-Medical men
I've talked with don't believe that, but they admit that long trips
outside of gravity might have odd effects.

"Then there's the question of orientation. Here on earth, orienting
yourself depends on the feeling you get from the pull of gravity, plus
your vision. just being blindfolded is enough to disorient some
people. Taking away the pull of gravity might be a lot worse. And of
course out in space your only reference points would be distant stars
and planets. We've been used to locating stars from points on the
earth, where we know their position. But how about locating them from
out in space, with a ship moving at great speed? Inside the space
ship, it would be something like being in a submarine. Probably only
the pilot compartment would have glass ports, and those would be
covered except in landing--maybe even then. Outside vision might be by
television, so you couldn't break a glass port and let out your
pressure.

"But to go back to the submarine idea. It would be like a sub, with
this big difference: In the submarine you can generally tell which way
is down, except maybe in a crash dive when you may lose your
equilibrium for a moment. But in the space ship, you could be standing
with your feet on one spot, and another crewman might be--relative to
you--standing upside down. You might be floating horizontally, the