I see that you've already got an answer to what needs to be corrected.

If you would like, send to me an email (my gmail username is the same as my HN username) and if I spot anything else I'll reply back with corrections.

The sentence is perfectly fine, you just missed the "r" in "recognize".

ecognize -> recognize

(Though I'm not sure if the typo was intentional.)

ecognize should be recognize