[shullbitt0r]

> Seeing the universe around them is comparing clocks with another frame of reference

So, if you don't sense anything, you don't sense time dilation either?

This is slightly more complicated. First of all, you haven't given a frame of reference. If you claim someone were moving at 0.99c then you have already set the frame of reference. And they would have to gain near infinite mass and would die. You seem to assume a restricted frame of reference though, inside the spaceship. So, a point of reference inside the spaceship would see light moving with c inside the spaceship. And would assume his own point of reference as the origin of the inertial frame of reference. So baring any outside measurement, how do you know the spaceship is moving with 0.99c and in which frame of reference?

[shullbitt0r]

Oops: I notice my mistake now, acceleration is the problem, not speed.

[IntronExon]

Nailed it, although you were right in some of your objections, the 99.9% c ship is just a toy to illustrste the extreme dilation near a black hole.