Re:Why yes, yes I can.. (Score 1)

$10 curtains block the light just as well as $200 curtains.. but people still buy the $200 curtains.

Since you are using curtains as examples and since this is slashdot and everyone here posts something that goes off on a tangent of the parent post...

Real slashdotters would use blackout cloth for curtains since we don't care about design, we care about the purpose of a curtain and how geeky can the curtain be. If a curtain is to block light, then we must have the best "block light" curtain (think linux for curtains? :P)... in our case this is blackout cloth. (If you don't know about blackout cloth, the DIY projection scene makes large (>50") screens with this)