ABSURDITIES, NOT PARADOXES, IN EINSTEIN'S RELATIVITY

If one believes in Einstein's 1905 constant-speed-of-light postulate, one should also believe that the volume of material objects can be reduced unlimitedly without spending any energy, and that the shrunk object still releases the energy that should have been put in shrinkage when, after being trapped in a small container, it tries to restore its original volume:

http://math.ucr.edu/home/baez/physic...barn_pole.html
"These are the props. You own a barn, 40m long, with automatic doors at either end, that can be opened and closed simultaneously by a switch. You also have a pole, 80m long, which of course won't fit in the barn. (...) If it does not explode under the strain and it is sufficiently elastic it will come to rest and start to spring back to its natural shape but since it is too big for the barn the other end is now going to crash into the back door and the rod will be trapped IN A COMPRESSED STATE inside the barn."

http://master-p6.obspm.fr/relat/encours/TD1_201314.pdf
"Un perchiste se saisit d'une perche mesurant 10 m, puis il s'élance en direction d'une grange mesurant 5 m de profondeur et percée de deux portes A et B (cf figure). On suppose que le perchiste se déplace à une vitesse constante v telle que gamma = 2. Un fermier, immobile par rapport à la grange, décide de fermer simultanément les portes A et B quand l'extrémité Q de la perche parvient à la porte B."

http://www.parabola.unsw.edu.au/vol3...ol35_no1_2.pdf
"Suppose you want to fit a 20m pole into a 10m barn. (...) Hence in both frames of reference, the pole fits inside the barn (and will presumably shatter when the doors are closed)."

Pentcho Valev