After several negative experience's helping friends and strangers, I finally learned my lesson after 40 years. Now I play ignorant, sorry, but that is how it is.
When I help someone change a tire and then they blame me because their car will not start, well, that was the end of it.............
When I jump start their car and then they blame me because the radiator is leaking, well, that was he end of it...........
When I changed a fuse for a stranded motorist and they blamed me because they ran out of gas, that was the end of it............
Etc., Etc..........
I am obviously a slow learner...............