Can a script be made that never "breaks"?

No, because even if you made it perfect or self resolving, you could never predict the updates/changes to the RuneScape or OSBot clients.

that would be the same as asking a car company to make a car that drives 100% all by itself and guarantee it not to crash. they cant predict how other people are driving. 

that would be the same as asking a car company to make a car that drives 100% all by itself and guarantee it not to crash. they cant predict how other people are driving. 

 

Not really the best analogy, as there is self driving cars

Yes, the empty script.

But given the task of the script is not trivial, chances are fagex will completely remove the task and thus the script breaks.
If thats not the case then even when hooks break you could resort to CPU heavy computer vision algorithms (like SURF/SIFT), which would work even after minor object/npc changes.
Now if there are no weird updates which break the script, and hooks work then obviously a script can be flawless.

Its not possible to create a script that is 100% flawless.

In theory it would be 100% flawless, but a script is not a human, so it will fail if anything happends that's not meant to be.

 

All we can do is make it as good as possible ^^

Khaleesi