Shimano Tiagra Gear shifter

[Leaway2]

Having one bike with 2300 and one with tiagra, I am forever pressing the none existent thumb shifter. To make matters worse, one has cross top brake levers

 

[Nigelnaturist]

Having one bike with 2300 and one with tiagra, I am forever pressing the none existent thumb shifter. To make matters worse, one has cross top brake levers

I have a habit of doing that since I upgraded from Sora to 105, not often but it happens.