What is your particular definition of crucial? You might find that without any cyclical dependencies, it is really hard to define "crucial" without ending up o

What is your particular definition of crucial? You might find that without any cyclical dependencies, it is really hard to define "crucial" without ending up on "provide most value". And when discussing jobs which "provide most value" you are forced into a corner accepting that the highest paid positions are the ones which the market has determined as "providing most value".