I was listening to comedy radio. Some one in the crowd shouted out "SURVIVAL OF THE FITTEST" - the Comedian agreed instantly and I do to.What companies do a lot of is hire part time with no benefits. It works out great for those living at home with parents but not so well for the 60 year old that needs benefits.
"SURVIVAL OF THE FITTEST" is a broad statement. It can be your work ethics, craftmanship, or how well you shoot of your tongue / mouth. IT doesn't mean your physical endurance.
Do you work smarter or harder. You be surprised how many times I see people say harder.