Yes. Believe it or not, that is the standard for walking one mile.
weird. if i walk slowly it still only takes me 12min.
You do realize a 12 minute mile is walking 5 MPH which is not walking slowly by any stretch of the imagination, right? Are you sure you know what a mile is?
iv'e walked a 10min mile during high-school p.e. my fast walking is about as fast as those weirdoes who "powerwalk"
Except, no you didn't.
i started walking home from school in the 4th grade. walked home about 90% of the time 4th-12th. each school was over a mile to my house. i learned to walk faster so i would get home faster. (if its a route i know i can read and walk faster than some average speed that is slow because of the average fatness of people)
my stride is quite long when i make full use of it.
No one is questioning you (speed) walking a mile in 12 minutes. Its you saying that even when you walk slowly that it only amounts to 12 minutes that is the ignorant part. That is not feasible by any stretch of the imagination.