More coverage on @BBCr4Today of the new Healthcare Safety Investigation Branch that will come in to force from today. The interplay with what the NHS might take from the world of aviation, or Team GB cycling (and the Black Box Thinking book by @matthewsyed) is interesting.  An approach accepting that mistakes happen; that absolute perfection is unattainable all of the time but using mistakes as opportunities to improve; and committing to making marginal gains wherever possible seems sensible and essential not just for certain industry or sports sectors, but right across the board.