"History Eggs Hunt"?

So in the spirit of Easter Egg Hunts, where parents hide Easter Eggs for their children to look for, so the children can enjoy themselves hunting for and eating the eggs, what have the writers of History concealed in its pages for those looking for the surprises only they know to seek? Now that number includes us too...
I found telepathy a hidden secret of the pages of time. I do not mean just the concept or belief! Take the existence of radio waves equivalent to thought waves and then we have the basis for our own radio set head transmitting whether we know it or not! Telepathy has been included in History for how long and no one care to show how but the writer of Think and Grow Rich? Radio telepathy, why is it still hidden?
Warning, of course there are those of the camp that History concealed from the general public certain things because they are dangerous and too much for the average person to know anything about and these may aim to prove that opinion true. So if you get "radio" abuse pray and seek spiritual help.
So become a history buff on a mission if you want to join the "egg hunt". Read history aware there may be hidden gifts in its pages concealed by historys' authors for fun and adventure... History also loved keeping secrets as secret societies prove so be wary about spilling the beans as the saying goes as some societies may not be as nice about sharing as me.