Counterpoint to the above was the customer who selected OS/2 for their computer --- we installed it and delivered, but the next day they called asking for help with installing a printer --- despite my only OS/2 experience being doing the install the previous day, the UI was consistent enough that I was able to talk them through this on the phone w/o a reference system to use in parallel (we only ever sold the one OS/2 computer and never did get a second copy in).
Counterpoint to the above was the customer who selected OS/2 for their computer --- we installed it and delivered, but the next day they called asking for help with installing a printer --- despite my only OS/2 experience being doing the install the previous day, the UI was consistent enough that I was able to talk them through this on the phone w/o a reference system to use in parallel (we only ever sold the one OS/2 computer and never did get a second copy in).