01
It never takes the pitch at its word.
What a company says about itself is the beginning of the reading, not the end. The rest is earned.
02
It knows what a company should look like by now.
A team of four and a team of two hundred are not held to the same bar. IIRS knows which bar applies, and never confuses the two.
03
It gives the same answer twice.
Ask it again next month and it will say the same thing, for the same reasons. Opinions drift. This does not.