This is the result of a series of steps that each seemed somewhat reasonable — like a marketing version of path dependence (or maybe ratcheting). Clearwire called WiMax 4G because it's an incompatible, more advanced, and dramatically faster protocol than EV-DO or WCDMA. Then T-Mobile introduced HSPA+ which is technically an incremental evolution of 3G but is actually faster than WiMax; thinking that it's unfair for a faster network to have fewer Gs, they called it 4G. Now AT&T will be penalized if they call their HSPA+ 3G, so they also call it 4G.<p>Honestly, the traditional G naming scheme was too arbitrary and confused users.