The author needs a proofreader - stat!
I once made that same mistake - in an essay I wrote for my seventh-grade English class, back in 1972. Teacher pointed it out to me, subjected me to a little good-natured ribbing.
Long and short of it: I never made that mistake again.
Regards,
I think it was Ed Zern that wrote about ice fisherman keeping maggots warm in their mouths.