I knew nothing about mangos until I joined Peace Corps in 1978. I was to be a vegetable researcher and supervise vegetable seed production in Rep. du Niger. In the garden 14 hectars, I was in charge of was an old mango tree. Men would go up in it and walk out on the bigger limbs and use poles to knock down mangos. Men below would catch some of them. Others went splat.
So I asked what they were. A couple of the men found one with the perfect ripeness and cut it open for me. Wonderful. But while that huge tree was a wonder to look at, all others were kept to a reasonable height. I later found that 6 small trees in my yard were mangos, but a different variety which produced later. Good eating!