Arrange 3 Knives to Rest on Tips of Handles/Variant/Mistake

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Source Work

1992: David Wells: Curious and Interesting Puzzles:

The Puzzles:
Henry van Etten


Variants in Victorian puzzle books demanded how three knives might be used to support a drinking glass, in the ample space between three other drinking glasses placed on the table with more than enough space for a fourth glass to be placed on the table between them.


If you count carefully:

one glass to be balanced
three glasses forming the ample space

you notice that the glass to be placed on the table between them is actually the fifth glass.