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India
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Beginner
This is Kunal Shah laying out the Delta 4 rule in his own words, the exact framework behind our short answer. You get the core test straight from the source: score your product against the status quo on a ten point scale, and only a gap of four or more creates irreversible switching. It is short, concrete, and built on Indian examples he studied firsthand.
Kunal Shah on the Delta 4 Theory (TechSparks talk)
On YouTube (YourStory TechSparks) by Kunal Shah ~20 min
- A four point or larger efficiency gap is what makes a switch stick
- Irreversible behaviour is the real signal of a great idea, not marginal preference
- Big deltas create a brag worthy proposition that spreads by word of mouth
