Why not? Even Interstitial travel is better than no travel.

To look in cracks? Is that any kind of a life for any self respecting Granny? What will she find?

Crack 1

Crack 2

Crack 3

Crack 4

Crack 5

Crack 6

Crack 7

Crack 8

Crack 9

Crack 10

And that is how granny makes her old-fashioned Irish stew. The first ingredient is added last. Does that make sense? Is that the act of a sane ubiquitous Granny?