Can Materialists Have Free Choice?

According to the materialist philosophy that still dominates the
sciences, there is no free will. The human mind is nothing but
brain activity, and the brain is a genetically programmed
computer. So can materialists have free choice, including the
choice to believe in materialism? If they can, it would suggest
the mind is more than just brain activity. In this dialogue,
Rupert and Mark explore this question and discuss recent research
on free will.