Yeah , but when you're zapping you're changing from one channel to the other , so you're passing through all the channels. So , when you say I want to go to the channel number twenty that's  you've decided to go to channel twenty , so you can say channel twenty , or channel four , because you really want to go on this channel.
Uh , yeah , and y that's  yeah.
But if you really want to to do zapping you you don't really know what you want to do , you can turn it.
And this would be more for browsing , ah.