"Doing things you need to do changes things you need to do."
I had not come across a better quote to illustrate the nature of evolutionary (or incremental) activity than this. We do not need to know everything to get started. As such we know very little to begin with. Only way to know more is to do something based on what we know and that alone will open up what else we need to do. It is like starting the journey as and when the first light is green. Worrying about all the lights that may be red down the road is not going to help. On the contrary, it may get us some honks from angry people :)
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