Good developers move around. I may have done scientific computing a few years ago and be on "web startup" now, or vice versa... And being able to move around and still use the tools you love is F AWESOME, let me tell you!
...but the side effect is that when moving around and keeping the same tools, you tend to also bring one mindset from one area to another, so a bunch of pythonistas hacking on a new web framework may have brought with them small pieces of mindsets from the desktop apps world, systems an ops or even scientific computing, and this is GOOD, IMHO, though it may make certain rhythms of development seem "out of tune" with the speedy "jump and run towards the newest squirrel" style of learning or development...
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Good developers move around. I may have done scientific computing a few years ago and be on "web startup" now, or vice versa... And being able to move around and still use the tools you love is F AWESOME, let me tell you!
...but the side effect is that when moving around and keeping the same tools, you tend to also bring one mindset from one area to another, so a bunch of pythonistas hacking on a new web framework may have brought with them small pieces of mindsets from the desktop apps world, systems an ops or even scientific computing, and this is GOOD, IMHO, though it may make certain rhythms of development seem "out of tune" with the speedy "jump and run towards the newest squirrel" style of learning or development...