WHAT IS YOUR DANGEROUS IDEA?
The
history of science is replete with discoveries
that were considered socially, morally, or emotionally
dangerous in their time; the Copernican and
Darwinian revolutions are the most obvious.
What is your dangerous idea? An idea you think
about (not necessarily one you originated)
that is dangerous not because it is assumed
to be false, but because it might be true?

Some really smart people on page 5. This thing is worth a read. Lots of well known folks giving their 'dangerous ideas.'

THE WORLD QUESTION CENTER 2006: What is your Dangerous Idea?