Big batches incentivize for choosing a suboptimal solution


As the batch size goes up, the emotional investement in it goes up as well, since we’re investing more time in the given solution.
As we become more invested in the solution, the bias towards that solution becomes stronger and it’s less likely for other equal solution to surface.
It’s likely that we become defensive about it as well, just because of the emotional pain of a huge work that we would have to do in case of rework or a complete change of the solution.

And this makes us more likely that we’re going to choose not the best solution for the given context, but the solution in which we’ve invested the most. And that’s most of often a suoptimal solution.

Smaller batches counter the bias caused by big emotional investment.