It is quantifiable thing not a feeling.

Between ten thousand runs of:

``` const int MAX_COUNT = 10000;

printf("I'll count up to %d", MAX_COUNT); for(int i=1; < MAX_COUNT; i++) printf("I'm now counting %d", i); ```

And of the following prompt:

``` You'll count to 10,000. At the start say "I'll count up to 10,000" and then for each number say "I'm now counting <number>" and do not say anything else. Do not miss numbers in between. ```

Which one is going to produce 100% correct results out of a 10,000 run of each?

Now don't give me "these are different tools". We all know. I'm talking about reliability and predictability.