The PHD who taught me calculus once dryly stated “Arguably all prepositions roughly mean the same thing!” So Roy McCasland, if you manage to read this, you should learn Tagalog(Filipino) which resoundingly supports your claim. Tagalog has two prepositions contrasted with the over 100 that are cumbersomely and onerously practiced in English. What is a preposition? Preposition literally means to place before. In this case, the word means to place before a noun. Some refer to prepositions as noun markers.
Nasa and sa which translate to on and in respectively in English are the only two prepositions in Tagalog! Could it be that the Philippine islanders who prefer the simple life and value nature also understand the value of a simple exception free language?
The most common reply to a phone call where the receiver was asleep is “I am in bed” NOT the correct “I am on the bed.” This amplifies the absurdity of a language that tries to distinguish between over 100 prepositions! English users can not even keep track of the difference between in and on!
BTW Dr. McCasland, you taught an excellent calculus class. Go Texas Tech! This writer is a math teacher and attempts to teach in a manner comparable to your pedagogy and style.
I will close by listing the over 100 English prepositions, for emphasis, that are pedantically and unnecessarily covered in many United States Schools: