Evolution

What the fossils told us: Quit preaching. Listen.

Spread the love

Talk to the Fossils.jpg We asked them, and we learned a lot, including:

Common ancestry was at one time mainly a religious dispute. Everyone thinks they know what happened at the iconic Scopes “Monkey” Trial (they don’t, actually).

But now, since genome mapping became routine, the unthinkable has happened: Actual genomes do not demonstrate the Tree of Life in the neat and orderly way that underlies Darwinian accounts of evolution. They could hardly be expected to do so, given the creativity many life forms exhibit with their own genes via natural genetic engineering, horizontal gene transfer, epigenetics, and a crowd of other mechanisms. The Tree of Life has become a bush or a circle of life.

Finally, when we add up all the demonstrable mechanisms of change in life forms over time, a great deal of the picture is still missing. Either there are many more mechanisms still to be discovered or there is a fundamental force we are not accounting for.

Part of the answer probably lies in the application of information theory to the history of life. On that score, see The Information Enigma More.

See also: Talk to the fossils: Let’s see what they say back

Follow UD News at Twitter!

2 Replies to “What the fossils told us: Quit preaching. Listen.

  1. 1
    daveS says:

    The Tree of Life has become a bush or a circle of life.

    I assume the “circle of life” refers to this? It’s still a tree. The information it conveys is exactly the same as if it were drawn more like a physical, wooden tree.

  2. 2
    leodp says:

    It’s just Wikipedia, but interesting still that words like, “inferred, hypothetical, implied” are now in place of more confident terms used a few years ago in presenting the, phylogenetic tree of life. Wonder when the word gets out to students and the public? I didn’t even see a disclaimer conclusion like, “though not quite complete yet the tree is becoming more clear as new discoveries are being made.” Remarkable.

Leave a Reply