> If:
>
> Train's length = Tunnel's length
>
> Then:
>
> Train's length * 3 / 5 = Tunnel's length * 3 / 5
>
> Of course, if the tunnel shrinks to 3/5 normal size, then everything else moving at the same rate would also shrink to 3/5 normal size.
>
> IOW, THE BIG CRUNCH.
>
> I'm not sure that's the answer you want, though.
>
> Faw"And what makes you think Brunnen-G would associate with giant evil space bugs, anyway? (-: "cett

No, the don't both shrink. Remember, anyone moving at a constant velocity can claim to be at rest. To Brunnen-G, the tunnel is its normal length and only the train has shrunk; to Spider-Boy, the opposite is true.

Bal "It's a toughie, but the key to the answer is in statement #3" anthalus