A little less, others more.

It is simple when drawn in a diagram, but when you try to explain it in words, it is so complicated that people get confused and think in a strange way.

• Even if the quantity doesn’t decrease, the percentage will.
• 
• If the quantity of one thing A does not decrease, but the quantity of another thing B increases, then the proportion of A in the total of A and B will decrease.
• Although it looks obvious in the figure, some people focus on the words “decrease or not decrease” and think in a way that blurs the distinction between quantity and percentage.
• When we’re talking about “decreasing proportions,” it doesn’t matter whether the quantity is decreasing or not, because even if the quantity of A is increasing, if the quantity of B is increasing faster, then the proportion of A is decreasing.

Error in considering 99% as 100%.

• 
  • Narrow observation range, unconsciously ignoring what is inconvenient, simplification when it is not 100% due to poor thinking skills, etc.
• Mistaking or claiming “something that already exists as a fact” for “something that does not.”
• The premise is at odds with those who know “there is.”

error that I think the quantity will be maintained.

• 
• The fallacy that what we have now will be maintained in the future in the same quantity as it is now.
• Most of the time it will increase or decrease, but implicitly assumes that the same amount will be maintained without considering the possibility of such an increase or decrease

confusing decrease with disappearance.

• 
• Some people argue that it’s “going down” and say, “I don’t think it’s going away!” Some people argue that “it’s not going away!
• You mischaracterize the claim of “decrease” as a claim of “disappearance,” and then argue against it.
  • It’s just useless noise because the premise is false.

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