There are some people you just want to keep in a time capsule forever because they are so utterly adorable. Most of them small kids, but some of them teenagers, when they're in that awkward transition stage between boy and man or girl and woman. It is possible for someone to be adorably awkward, yes.
The trouble is, you only realise this when you're looking back at old pictures of that person. (In most cases, anyway.) You sigh and sadly tell yourself that it's too late, although it's not like you really could've done anything at the point before, anyway. Time capsules are airtight, and as novel an idea as it may seem, you know you couldn't possibly have trapped that person in one.
Sigh. I'm feeling a little bit out of sorts, I guess.