snapshots: the unexpected series: a bit about tenses

I've been worried about tenses. Worried that the fact that some are in the past tense and some are not might take away from the cohesiveness. I tried to fix them - couldn't - and realized that I think the tenses may have something to do with self preservation. The ones in past tense seem to need to stay that way and the ones in present tense feel comfortable where they are. I can't explain it. I just wanted to acknowledge the variation. Maybe later I'll be able to fix it... but for now I can't.