Skip to content
quotesby

About this quote

What does it mean?
The evolution of complex structures like the eye happens relatively quickly in geological time, explaining why it appears independently in many species.
In plain terms
Complex eyes evolved many times because the process is fast on Earth's timeline.
What can you take from it?
Evolutionary changes can occur much faster than people assume.

Where it applies

  • discussing evolution
  • explaining biological diversity
  • debating design in nature

Putting it to work

  • simplify evolutionary arguments
  • explain eye diversity
  • contextualize geological time

Questions to consider

  • How fast can complex traits evolve?
  • What defines a geological blink?

Another view

It assumes specific rates of mutation and selection that vary by organism.

More from Richard Dawkins

  1. Never say, and never take seriously anyone who says, 'I cannot believe that so-and-so could have evolved by gradual selection'. I have dubbed this kind of fall…

    Permalink to quote #54
  2. This is one of the hardest lessons for humans to learn. We cannot admit that things might be neither good nor evil, neither cruel nor kind, but simply callous …

    Permalink to quote #56
  3. Your DNA may be destined to mingle with mine. Salutations!

    Permalink to quote #53

Related quotes

  1. Nilsson and Pelger began with a flat retina atop a flat pigment layer and surmounted by a flat, protective transparent layer. The transparent layer was allowed…

    Richard DawkinsRichard Dawkins quote #104
  2. But even with these conservative assumptions, the time taken to evolve a fish eye from flat skin was minuscule: fewer than 400,000 generations. For the kinds o…

    Richard DawkinsRichard Dawkins quote #105
  3. I want to argue that the 'sudden' appearance of species in the fossil record and our failure to note subsequent evolutionary change within them is the proper p…

    Stephen Jay GouldStephen Jay Gould quote #6