“It takes a lot more effort to actively believe something doesn’t exist than it does to leave your mind open to possibility. Just because you haven’t seen it yet doesn’t mean it won’t happen,” Helen reminded Ravi gently.

“As to Tuesday being a construct, well, I do miss some way of marking time. Seasons seem to still occur with some regularity but I wonder if we ought not start counting days. Then, of course, we’re just making tick marks on the cell wall, aren’t we? It doesn’t mean anything except to us fellow prisoners.”