“This and That” is an occasional series of paired observations. See past “This and That” posts here. – Ed.
Today: Sailing into the unknown

Bas Jan Ader aboard “Ocean Wave” about to set sail July 9, 1975. Image © 2015 the Estate of Bas Jan Ader / Mary Sue Ader Andersen/ The Artist Rights Society (ARS), New York. Courtesy Meliksetian | Briggs, Los Angeles.
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No matter how original, innovative or crazy your idea, someone else is also working on that idea. Furthermore, they are using notation very similar to yours. – Bruce J. MacLennan