This JIRA captures an idea from the mailing list to prevent it from getting lost.
What if applying your preferences to a page causes it to break — or the presentation of it to break — so that it is not usable. This is something that won't be necessarily detectable by GPII. But just going back won't work either because the page in native form would not be usable.
Try Harder = (using a more powerful tool — or even a human) in ever increasing power (and cost) steps:
- local device
- network service
- more expensive network service
- human being