Because Chrome runs from read-only media on the Chromebook in Guest Mode, some Chrome settings (chrome://settings) are not changeable. For example, one cannot globally disable Javascript or cookies globally. It is possible to disable these "features" only using Developer Tools and therefore only on a per tab basis. Settings are lost when the tab is closed. Similarly, any changed settings in Chrome (through chrome://settings) are lost on reboot. As such, a computer user who dligently entered per site settings for privacy and security would lose all her settings every time she reboots the Chromebook.

Needless to say Chrome defaults favour Google and Google's advertiser customers. Making it impossible^1 for Chromebook users in Guest Mode to save and import privacy and security settings is a dark pattern.

1. Google employees will proclaim this is incorrect. All the computer user has to do is "log in" to Google in order to save her settings. Once logged in, Google can collect more data about the computer user. However non-employees of the corporation may not wish to "log in". Google employees assume that all computer users should trust Google, like they themselves do. Given that Google is collecting as much data about them as the law will allow, and then some, this is a curious assumption indeed.