Disfluencies occur naturally when a speaker is processing thought while speaking a sentence, talking and thinking at the same time. The speaker can take slightly longer to find the correct phrase or word and says 'uhh'. This can also drum up the next words, making the listeners remember them.

The attempt to remove disfluencies from public speaking is in effect 'robotizing' human beings, who unconsciously display their wisdom, intellect, and complex thinking by naturally using the pauses in their speeches.