The brain as a pattern making machine – it fills in the blanks without us knowing based on what it expects to be there

In one telling study, research participant heard sentences with the first part of a key word omitted (which we indicate by “*”), and with different endings of the sentence presented to different participants. Thus, some participants heard “The *eel was on the axle,” and others heard “The *eel was on the orange”. In both cases, the participants reported hearing a coherent sentence – “The wheel was on the axle” in the first case and “The peel was on the orange” in the second – without ever consciously registering the gap. Nor did it register that they themselves had provided the “wh” or “p” they “heard” in order to make sense of the sentence.

Excerpt from: The Wisest One in the Room: How You Can Benefit from Social Psychology’s Most Powerful Insights by Thomas Gilovich and Lee Ross