Wherever you live in the world, there are thousands of languages that are rare where you live and also link into centuries of community and culture and a beautiful country.

Why gamble on your child’s behalf that their life will be better off for knowing one of the very few rare languages that do not come with any of those benefits? So you can feel cool at Esperanto conventions? If you teach them Polish instead, for example, then they will have a lot of opportunities to eat pierogis and could someday meet the love of their life on a vacation in Poland — sounds a like a much safer gamble to make on your child’s behalf than to dedicate their critical period to Esperanto conventions.