<span>Advertising. Advertising tends to be extremely expensive but does not always provide much returns, and often goes completely ignored by the target audience or only reaches the people you already knew about.</span>
Answer: Wouldn't go past High School English and here is why.
Explanation:
English takes a majority in our world today, it will always be spoken, whether 1% of the time or 5%. It has been integrated into our daily lives that even not knowing how to properly speak it is looked down upon. I believes studying English is essentially and will be for centuries to come, but the depth of studying the subject shouldn't go past High School level which incorporates poetic and descriptive inferences through words.
At least that's what I've gotten from it.
I think that the most important of the 14 points was the last one, which said that a general association of nations shall be formed to have mutual guarantees of peace, and this lead to the League of Nations.