Source
When this applies
when someone claims a trend is exponential rather than linear, in any domain
The takeaway
Treat credible claims of genuine exponential change as a rare, high-value signal worth acting on disproportionately early, because most 'trends' are not actually exponential and the ones that are get underestimated by everyone else.
Why it works
If a trend truly compounds exponentially, near-term appearances dramatically understate its eventual scale; recognizing and believing in genuine exponential dynamics (rather than dismissing them as hype) justifies committing resources years before the market materializes.
One level up
The biggest returns come from correctly identifying the few truly exponential phenomena and positioning years ahead of consensus, accepting the risk of being 'too early.'
Where it stops holding
This stops working when the claimed exponential trend is actually a short-lived or linear phenomenon, in which case early over-commitment wastes resources (the hosts note Bill himself worried they started 'a year or two too early').
Detail
approach: On hearing a claim of exponential improvement, ask what it would mean if true, then evaluate commitment against that scaled-up implication rather than current reality.
signals:- claims of repeated doublings or compounding over time
- skepticism from others ('exponential phenomena are pretty rare')
- an unintuitive implication (e.g., 'we can think of computing as free') that nonetheless follows logically if the premise holds
rationale: Gates's quote: 'exponential phenomena are pretty rare, pretty dramatic... this means, in effect, that we can think of computing as free.'
In their words
Paul and I had talked about the microprocessor, and it was really his insight that because of semiconductor improvements, things would just keep getting better. I said to him, oh, exponential phenomena are pretty rare, pretty dramatic. Are you serious about this? Because this means, in effect, that we can think of computing as free.