When AllThingsD’s executive editor Kara Swisher asked Cook for his thoughts on the current headline-grabbing wearable–Google Glass–he said “the likelihood that it has broad appeal is hard to see.”

“To convince people they have to wear something, it has to be incredible,” Cook said. “If we asked a room of 20-year olds to stand up if they’re wearing a watch, I don’t think anyone would stand up.”y

The comment was made during Apple’s second-quarter investor call. Cook said that statistic indicates that the wearables industry is still young.

“I still think we’re in the early innings on the watch,” Cook said on the call. “The number of new people that are new to the Watch is almost three out of four, and so this is a long way from being a mature market.”