If I didn't know better, I'd think that they were trying to cover for the fact that their models were off, too.
Here's a climatologist trying to prove that every odd number is prime:
3 is a prime number. Check.
5. Prime.
7. Prime.
9...experimental error.
11. Prime
13. Prime.
Well, that's enough. All odd numbers are prime.
1 is prime
3 is prime
5 is prime
7 is prime
9 is prime
11 is prime
13 is prime
15 is prime
17 is prime
19 is prime
All odd numbers are prime!
Cheers!