[eyelidlessness]

Thanks! I don't know why I wasn't able to find it. Still, I would never have expected any of the behavior I described.

[sk5t]

I always internalized postgres's array behavior based on the examples, which include multidimensional arrays on text[] columns. Also, common functions like array_length require an index argument--"which array within the possibly multiple arrays do you want the length of" etc.