Apparently to be a Hoosier, you have to be a writer, military, or a politician. It especially helps if you're a white man. The author only highlights two women. One was not even a Hoosier; she just happened to spend some time at Purdue. The other woman was a suffragette, but instead of telling us about her deeds in the movement, the author tells us about the spiritualist book she wrote. There was only one entry for African-Americans. Even better, one entry was written in regards to a sand dune (I guess you could say Hoosiers were great at dismantling it).
Also, to be a great Hoosier, you have to be dead. The most recent entry died in 2007.
I'm really not sure how the title connects to the chapters of this book. The author rarely points out the characteristics he thinks defines a Hoosier. And half of the people weren't even Hoosiers. They just happened to do something interesting while on Indiana soil.