Trip-up in a sentence as a noun

The real trip-up in that logic is, just because something is one-of-a-kind doesn't mean it has infinite value.

Trip-up definitions

noun

an unintentional but embarrassing blunder; "he recited the whole poem without a single trip"; "he arranged his robes to avoid a trip-up later"; "confusion caused his unfortunate misstep"

See also: trip stumble misstep