My point is that when it is self inflicted ... all bets are off. Changing the front shifter uphill while standing up 100-200m from the top is bad bike handling.
It's not a flat tyre, a car that hits you, feeding zone etc.
Part of cycling is knowing how to handle your bike, knowing when to eat and drink and what to eat and drink etc.
Bungo, it was a little more than a couple of hundred metres.
I remember the scenes of Schleck chasing back through the pack trying to get back.
Schleck was attacking at speed when his chain jumped and it was not down to a gear change.
He also panicked and struggled to reset his chain.
What was also a talking point is that Contador won the GC almost exactly by time he gained that day.
Who can forget Bradley Wiggins mechanical and bike parking itself as he angrily tossed it to one side.
He had been having problems with his electronic gears.
I cant remember the race but I do remember his protecting rider behind him knocking his rear derailleur with his front wheel earlier in the stage and so his problems may well have been a home goal.
It was Nibali that did not stop that day however I don't think Wiggins was the GC leader at the time.
We are going to have some good battles in July my friend 
I wonder how kind @BILL S will be with the courses? Pan flat, or some hillier ones? 
