Originally Posted by
sleepy
How do you feel when you use a sensor activated towel dispenser or faucet and it doesn't work? Don't you wish you could do something to fix that? Or when the power goes out?
It isn't likely to happen with di2, but its always a possibility.
There's something to be said about the mechanical simplicity of a bike, dt shifter or STI's, there's a cable actuated by human power.
Sleepy the towel dispenser analogy is quite good, this difference is that the Di2 shifts better.
I also don't see much simplicity advantage in brifters vs shifters.