On 12/8/2012 12:28 AM, David Reiss wrote: > Default_8.0.nb is what is used when you open a notebook from pre-9 > versions which had used Default.nb if you choose to retain the earlier > styles when responding to the dialog that asks you if you wish to do > so.
But even if it asks, it is still wrong to change the default style sheet this way. I saw this question myself, and I simply answered 'ok', like I assume everyone would also, because I thought it is simply asking me to use an updated default style (meaning bug fixes and so forth), not a DIFFERENT one!
That is the key here. In addition, most users always tend to click on the 'ok' choice when presented with option not clear to them during installation or when they see it first time. They sort of trust the system.
Asking someone if they want to use the `updated` style as default, before they even seen what the updated style is and if they would like it, is not right, given that there is no easy way to go back to the original style other than having to go rename files on the harddrive with the risk of deleting something important or breaking something.