👓 Living Bits: Information and the Origin of Life | PBS

Highlights, Quotes, & Marginalia

our existence can succinctly be described as ‚Äúinformation that can replicate itself,‚ÄĚ the immediate follow-up question is, ‚ÄúWhere did this information come from?‚ÄĚ

from an information perspective, only the first step in life is difficult. The rest is just a matter of time.

Through decades of work by legions of scientists, we now know that the process of Darwinian evolution tends to lead to an increase in the information coded in genes. That this must happen on average is not difficult to see. Imagine I start out with a genome encoding n bits of information. In an evolutionary process, mutations occur on the many representatives of this information in a population. The mutations can change the amount of information, or they can leave the information unchanged. If the information changes, it can increase or decrease. But very different fates befall those two different changes. The mutation that caused a decrease in information will generally lead to lower fitness, as the information stored in our genes is used to build the organism and survive. If you know less than your competitors about how to do this, you are unlikely to thrive as well as they do. If, on the other hand, you mutate towards more information‚ÄĒmeaning better prediction‚ÄĒyou are likely to use that information to have an edge in survival.

There are some plants with huge amounts of DNA compared to their “peers”–perhaps these would be interesting test cases for potential experimentation of this?

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