Some people I've talked to said they couldn't do most of that. They said they could think of an apple, but couldn't tell me much more about it, other than that it was an apple. Now, obviously I can't peer into their heads. Were they actually imagining more but were unable to put it into words? Were they underestimating the vividness of what they were imagining? Or were they accurately describing what was in their minds? Although I can't directly experience their minds, there were certainly differences between what each of us could describe.