“We don’t know what this structure does, so it probably does nothing. Remember, evolution produces a lot of non-functional debris.”
Early in his presentation, McInerney says that he hopes to persuade his audience that this familiar LUCA-based hypothesis “has been falsified.”
Conservation of function, but not genes, can be understood with an analogy to natural language. Consider two sentences.
“As for life, Dawkins’s claim that it is no longer a mystery is absurd. We still don’t have a clue how life began.”
The historical wellspring of randomness in evolutionary theory is Darwin’s own insistence on “chance” at the causal foundations of life.