I am in the middle of putting together a bike; BB went in, then cranks went on, and then I started putting the pedals on.
On the end of one spindle was an L, and on the other was an R. (As there often is.) So, being the trusting fool I am, I tried to put the L pedal in in the left crank. No deal. Not wanting to force anything, I tried the R pedal in the right crank. Again, no deal.
For a moment, I thought I had just had a stroke. Maybe I was confused about which hand was which. Nope, I have been good at that since kindygarden. Did I put the crank arms on the wrong sides? Nope. So, I gingerly tried the pedals in the "wrong" arms. Of course, they went right in.
Huh? Admittedly, these are cheap platform aftermarket pedals. Probably made in China. Maybe they have lead paint on them too.
I know mistakes can be made, but this just seems so fundamental that it is preposterous. Am I missing some other easy explanation?