8 ms·
Nope. 50% is 50%. It doesn't matter how big the market is, and that's Norvig's point. Once you penetrate 50% of the market, you're done.
by coherentpony 13y ago
Nope. 50% is 50%. It doesn't matter how big the market is, and that's Norvig's point. Once you penetrate 50% of the market, you're done.
- Joeri 13y agoHe does admit that you can sell more than one item to the same customer, so you can have > 100% if you compare units sold to potential customers.
- BenDaglish 13y agoIndeed - maybe a corollary should be "in the same colour".
- mildtrepidation 13y agoAs pointed out by slazaro, this is incorrect. A decrease in usage and/or a change in the market size potentially lowers penetration as a percentage, which could enable it to double again. As stated, it's either ambiguous or false. If it actually means penetration will never again double from the peak percentage it reached which was >=50%, it's trivial and uninteresting... if it doesn't imply that, then yeah, it's just incorrect.