And different people have different expectations of how a word is used and what its meaning is.Having the right expectation is the beginning of knowing what we need to teach our children.
For a lawyer, the primary meaning of "let" is "hindrance, obstacle, obstruction; as, without let, molestation or hindrance."
However, to a real estate agent, "to let" means "to lease; to grant the use and possession of something for a compensation."
To the vast American middle "to let" means "to allow."
Our expectations often influence our understanding.