is there any way to make the 'back' button always go to same pages?

is there any way to make the 'back' button always go to same pages?

to be more specific, i find that when navigating through the app sometimes the user may take certain paths which cause the back button to behave strangely.  i guess really it is behaving by popping things off its stack, but it seems to me it would be far simpler just to have the back button as a static link always directing the user back to the same place(s).

Am i missing a fundamental point here?

edit:  i thought about this a little more.  it seems to me that the fundamental difference between a web-site and an app is that in an app you know exactly where you want to go,  whereas as when you are navigating through a site,  you may know that on some page there was something you need to see again so you mash the back button until you find it.

if you do this on an app,  it could take you through choice and option menus you don't want repeated.

i think the solution i am leaning towards is just to override the click handler for the back buttons and point them always to the same page (assuming there was only one path to the page). 

hope this makes more sense,  and maybe this can be accomplished via manipulation of the second 'false' flag in changeMobile,  but that doesn't seem to work properly.