If you are an extremely well experienced software engineer you only care about learning new capabilities. This could include learning new languages but will mos

If you are an extremely well experienced software engineer you only care about learning new capabilities. This could include learning new languages but will most certainly not include frameworks. Learning new capabilities implies things like transmission, storage, performance, distribution. New languages may unlock new capabilities your current language does not. To a far lesser extent this may include learning some new tool. Frameworks are something you learn on the job to gel with a team or something you learn to be hired. Typically frameworks are an abstraction so that groups of people can execute against a common API, but otherwise are things you could do without faster and leaner as an individual.