12.3. Evolution in social media# Let’s now turn to social media and look at how evolution happens there. As we said before, evolution occurs when there is: replication (with inheritance), variations or mutations, and natural selection, so let’s look at each of those.
This section explains how social media content spreads in ways similar to biological evolution. Posts are copied and shared (replication), often changed through replies, quote tweets, or remixes (variation), and then selectively amplified based on human reactions, money, or platform algorithms (selection). Together, these forces shape which ideas go viral and which disappear, showing that platform design plays a powerful role in guiding online culture.