It's true that luck and circumstance are at work - via the genes any given creature (human or otherwise) inherits. The problem with the whole topic, however, is that - at present - its a true dismal science (unlike economics, which is neither truly dismal nor a science). Theres not much that can be done about a persons essential characteristics once hes born. Calvin was right, but with genes being the mechanism of divinely-ordained determinism.
In the 1800s, especially the latter half, people from certain parts of the earth were inventing and developing thousands of different devices and applications that would be quite beyond many people of today who would have no clue as to how to use the devices invented more than one hundred years ago.