As it relates to playing the piano, too much emphasis has been placed on strengthening āthe fingers,ā and this has in turn sent many pianists to the emergency room with fingers that have been pushed to their limits and beyondā¦.
Evolution did not factor piano-playing into its selective process, so, whilst the opposable thumb emerged out of necessity in order to preserve the species, and further propel us onto bigger and greater things, it was meant mainly for āgrippingā to/onto things, grasping & handling, but not for piano-playing. So you see, the emphasis should be on figuring out how these things called fingers can better adapt to a machine that is inherently out of context, and, in the process it could turn out that evolution will take this effort into account so as to develop hands/fingers that can be better equipped for the piano, and not mostly meant for gripping/holding onto things; in the meantime I advise you to concentrate on how to go about this lapse in evolution and try to better adapt your hands around this conundrum.
In a nutshell, the piano was forced upon us rather than something carefully selected for the preservation of the species, so donāt overly-exercise your fingers under the false notion that this will in turn make you a better pianistā¦.in other words, use your brain in figuring out a workaround that involves very little in the way of āstrengthening.ā