It's weird - both of the tables, even though the one on the left appears to be longer and thinner, are precisely the same shape and size. There is a great little animation proving it on Mighty Optical Illusions.
In the meantime, Julie seems to have created her own paradoxical table.
One evening, we were playing Scrabble. Julie was in 'thinking mode', and was resting her chin on her hand, while the elbow was on the table. However, she shifted slightly, and her elbow slipped off the table.
So... the middle of the table would also be the edge of the table.
Riiight... MC Escher would be proud.
It's close, but this is a real table that doesn't quite look right...
|I found this on Gizmag|