Certain points in the above writeup should be clarified.

The truth of the second point will become clear if you lift up your typing appendages from the keyboard and try wiggling them until they match. Unless you are a fourth dimensional being this will not be possible.

another noder msged me to explain in detail why H-Monk may be right in certain ways - let me be clear I DO NOT CARE! If he is suggesting that rotation alone can alter chirality of molecules then he is wrong. However, I think he was referring to anomerism - a property of sugars that does make them interchangeably chiral. So α-D-glucopyranose can become β-D-glucopyranose via the linear molecule - BUT this requires a reaction to take place (cyclisation by internal re-arrangement of atoms) so that it is not strictly the same molecule.