Did Watt or another inventor have a dream about ball bearings?

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The assertion by Elwood that James Watt developed bearings based on dreams is almost certainly apocryphal. Otherwise, I would expect it to appear in at least one biography of James Watt, but I'm not finding it. I searched in the following, and none of them even hint at anything about work on bearings or lead shot, nor of dreams influencing his work in any way as far as I can tell.

Arago, F. (1839) Life of James Watt (link)
Carnegie, A. (1905) James Watt (link)
Dickinson, H. W. (1936) James Watt: Craftsman and Engineer (link)
Miller, D. P. (2009) James Watt, Chemist: Understanding the Origins of the Steam Age (link)
Muirhead, J. P. (1858) The Life of James Watt, with Selections from His Correspondence (link)
Russell, B. (2017) James Watt: Making the World Anew (link)

Brian Z 18314

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