Engineers don't know how to writing.

It's pretty much an established fact. Here are just a few of the mistakes I came across when double checking documents:

PLEASE CORRECT THE FOLLOWING TYPOS:
"…capabible..." should read as "…capable…"
"…whole..." should read as "…hole…"
"…pimps…" should read as "…pumps…"
"…handel…" should read as "…handle…"
"…unexpected flor…" should read as "…unexpected flow…"

AND THEN:
Please define the phase "Carefully drill…" The specifications require that the Contractor drill the 3-inch diameter hole vertically within an allowable tolerance.

They're lucky I find this kind of thing funny.