Hindsight ...

As is often the case I missed the shot. Three nano seconds earlier and the deer would have been right in the centre of the road and in full flight!
Life is like that often. What if ............
Hitler had withdrawn from Stalingrad, Hannibal forgot to get his elephants drunk before attacking the Italians, the library at Alexandria had a sprinkler system in place or Henry Ford had been in favour of painting cars green instead of black.