
One way to get noticed as a scientist is to tackle a really difficult problem. Physicist Sean Carroll has become a bit of a rock star in geek circles by attempting to answer an age-old question no scientist has been able to fully explain: What is time?
Here at the annual meeting of the American Association for the Advancement of Science where he gave a presentation on the arrow of time, scientists stopped him in the hallway to tell him what big fans they were of his work.
Carroll sat down with Wired.com on Feb. 19 at AAAS to explain his theories and why Marty McFly’s adventure could never exist in the real world, where time only goes forward and never back.
Full story over at Wired.com



Was it not Eric Stoltz who was to play the part of McFly. Imagine that would have turned quite dark (the religious group leader from above would have a field day what with backwards time and intelligent theories).
“Never say never”?
if there’s something that I’ve learnt my whole life (until now) is that everything is possible.
Just saying..
but isnt time curved, like the universe? so it may not go back, but we could still meet ourselves coming & going…
Tom Waits says that ‘time is just memory, mixed with desire”…… so…..
T = MD
Job done, where’s my nobel prize?
But the Doctor explained this already!!
“People assume that time is a strict progression of cause to effect, but *actually* from a non-linear, non-subjective viewpoint – it’s more like a big ball of wibbly wobbly… time-y wimey… stuff. “
Time is an illusion, lunchtime, doubly so.