Translation of irrational in German

I would rather like that you write through the messaging system on this site and not to my private email address. All the info is gathered here online and I would like to keep is this way. It is nothing personal.
Anyway, I will add the 'offending' word feature within a few hours and write you an email once it is up and we will give it a try. Do you agree? Did you get my message? When do you want to start translating for me?
I need to learn a lot of Spanish because I want to study at the university of Madrid. In Switzerland, I studied law, but after 2 years I have switched to medicine: to help people, rather than you know....