“The path of scientific progress is often made impassable for a long time by such errors.”
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Source: Obituary for Ernst Mach, 1916
About this quote
A mistaken framework can delay discovery when later researchers inherit its assumptions without testing them. The line is useful for discussing error correction, but the words “such errors” depend on the surrounding obituary.
When to use it
- A laboratory revisits a long-standing calibration rule after repeated results fail to reproduce.
- A software team removes an inherited architectural assumption that has blocked simpler solutions.
- A historian checks an influential secondary account against original records before repeating its claim.

