&quot;Any inherent differences in productivity are dwarfed by the effects of being emotionally invested in your work and having lots of other people emotionally invested in the outcome.&quot;<p>In my experience, technology choices can make a massive difference in my ability to stay emotionally invested.  If I&#x27;m constantly spending mental energy on the idiosyncrasies, strange bugs, and repetitive code required by my technology stack, I have much less time and energy to devote to making changes the customers will actually notice.