[ccc3]

After reading this it struck me that no revenue model could really be complete without some statement of the level of uncertainty. In science, for example, you would never make a prediction without also stating the uncertainty in that prediction. But none of the revenue model frameworks I've seen have included uncertainty.

[jeremytliles]

In business school we were taught to incorporate uncertainty into projections and models, at the very least by including multiple scenarios. I'm surprised this isn't done in the real world as it doesn't require that much additional effort once you've set up a baseline and identified your assumptions.