Species Evolution

Based on the discussion (needs to be further verified) with **Ishant**
that species evolved in two ways:

1.  Species evolved randomly and those who adapted the environment
    survived
2.  Species adapted to evolve, instead of random evolution, and
    therefore survived

Additionally a few words are proposed/discussed.

-   **Sensory Adaptation:** It is proposed in Theory-2 from the examples
    of discovery of blind salamanders in caves and disappearance of
    human tail or pinky finger. It relates to the adaptation to
    environment based on sensory feedback (neural current)

To read:

-   *The selfish Gene* by Richard Dawkins