Premise: i don't know what the the last thing i've done as far as car repairs go is is change oil and filter an and that kind of stuff i haven't gotten really involved in anything uh extensive in car repairs in oh oh probably a year or so i think the last thing i did of any significance was change the water pump on an Oldsmobile
Hypothesis: I'm basically an expert mechanic and have done much more than simple oil changes and so on. 
Label: contradiction