Define Impossible
When we declare something impossible, we often forget to note the specific reasons why. Later, when circumstances change, we continue to insist "it can't be done" without revisiting our original logic. This mental error is surprisingly common.
A mathematician once dismissed the possibility of a particular Fast Fourier Transform application, forgetting the precise constraints that had made it impossible in the original context. "How much more stupid can anyone be?" he later lamented about himself. "Fortunately for my ego, it is a common mistake."
The error teaches us an important lesson: when determining something cannot be done, carefully document your reasoning. This creates an opportunity for future reassessment when conditions inevitably change. Our certainties about impossibility are often just limitations of our current context, not permanent truths.