It brings up the question, though, how many exotic or seemingly disconnected interests are past life related? Since most people are unconsciously affected by such things, it would be difficult to calculate.
How many antiquarians, historians, scientists, and archaeologists are out there incidentally researching the locations, problems, and joys of own past lives, without even knowing it?
An interest in Brazil might not mean one lived there ... maybe there is something about the presentation of that country that reflects the culture, explorations, or interests from a past life. Fascination with the Titanic might mean he was on the boat, built it, lost someone in the tragedy ...
All of it becomes a reminder of the patterns and inter-connectivity of life. It's fascinating how much of our forward progress is fueled by our history.