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Why is the show so centered around celebrity guests now? When audience members were used it was clear that Ryan, Colin, and Wayne were improvising. Also how many takes does it talk to get a song right? It sends really difficult to do.

Why does this only affect the fovea and not the periphery? Also what does this have to do with the macula lutea other than both being yellow?

Can you explain macula degeneration and how it's treated. My grandmother is currently losing her vision to it and I don't entirely understand what's happening.

Have you ever covered a camera to capture light fields? I'm not quite satisfied with Lytro and it would be cool if someone else started competing with them.

How accurate/scientific is forensic evidence? CSI has us believe that it is infallible but biometrics is rather variable. Everybody says finger prints are unique but can you actually catch a criminal using them and get a solid conviction?