the.com/ballpark

A number vague enough to be safe, specific enough to sound smart.

means An approximate figure or range given as a rough estimate rather than an exact calculation.

from Straight from baseball: a 'ballpark' is the stadium itself. By the mid-20th century, Americans started using 'in the ballpark' to mean 'within a reasonable range' — like a hit that lands somewhere inside the park rather than wildly foul. 'Ballpark figure' followed, turning the stadium's boundary into a metaphor for acceptable estimation.

origin
from literal baseball stadium size estimates
usage
lets you guess without committing
business trick
always round so you can blame rounding
range
wide enough to always be technically right
the.com · every word