This is because new ideas/concepts may require new words or words outside the scope of the 5th grade rule. An idiom is a cognitive miser of sorts.
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Example - search engine
search - familiar vocabulary
engine - cognitive short cut
- machine
- technical
- related to car
- transports from point A to B (car)
- familiar
- requires steering (car)
- most are comfortable with operating (car etc)
-----It is a hack to communicate when the available vocabulary does not convey the true intention of the speaker.
And/or the existing level of vocabulary is inefficient.
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Videos:
Star Trek Example: http://youtu.be/ukMNfTnI5M8
Archer Example: http://youtu.be/GzHhgPgO7wA
You are saying to communicate complex ideas one tends to need words a 5th grader wouldn't know.
I was saying to communicate an idea one should fit it an a single sentence.
Unless I missed something, we are not in disagreement. You are arguing for word quality, I'm arguing for word quantity. You don't disagree that boiling an idea to a single sentence is good, and I learned something new from you. The cognitive miser theory is fascinating.
Thank you for having put the effort to follow up.
It is the framing 'You do not UNDERSTAND your app unless you can simplify it in a single sentence' that I disagree with.
It is more 'You do not UNDERSTAND your market unless you can simply in a single sentence'.
Words start to break once you push them too far.