they'll never approach the quality of an SLR or a dedicated GPS They won't for people who need all of the functionality of an SLR or dedicated GPS. But how man

they'll never approach the quality of an SLR or a dedicated GPS They won't for people who need all of the functionality of an SLR or dedicated GPS. But how many of the people buying such things actually need all of the functionality? Quite often, they don't. They buy more than they need to indicate status, or because they fear having an inadequate device. Tablets provide an alternate form of status at the moment. And the fear of inadequacy is mitigated by their popularity: If everyone is buying one, how bad can it be? Single-purpose cameras and GPS devices are well on their way to marginalization as extremely niche devices. I think that will be true of almost everything a tablet can replace.