Yes, I'm quite familiar with apples, it's not like I run into the local grocers and stand in stunned silence at the granny smiths, and I can describe a given apple from experience quite easily - in text form, I just can't form a visual mental image of one. It's slightly better when it comes to people, in that I can barely picture someone's face (sometimes) if I concentrate, but it's simply not something I have much capacity for. It's honestly not something that I ever even realised was unusual until quite recently, and certainly not something that caused any problems for me over the years. I simply assumed that people were using figures of speech or simply exaggerating when they talked about that sort of thing (imagine my surprise at finding people that can actually daydream the way that you see in movies), and actually describing things or people to others has always come easily to me. There's also folks out there who claim to have purely image based thoughts as well, and they were the ones being tagged as NPCs the last time I saw this topic come up. These people claim to have to "translate" words to and from images while they're in a conversation - something that takes them enough time to make conversing difficult - and that's a completely alien concept to me. I think most people fall along a spectrum between these extremes though.