Our natural response to risk seems to be to avoid it at all costs. David explains why this may not always be the right thing to do.
[NOTE: When recording of this series was complete, we discovered an audio problem on the first ten videos, including this one, which caused the sound level to vary. Unfortunately it was not possible to fix this in post-production. We apologise for this and we hope it does not spoil your enjoyment of the video content.]
