Deleting files that TC has backed up

I have a feeling this is going to be an incredibly stupid question, but ...
once the T.C. has backed up my hard drive, is it safe to delete any and all files from my hard drive, at least all the ones that not essential to the OS and applications, etc.?
I've been wracking my brain trying to think of a way to make more room in my main hard drive, by deleting or moving files someplace else.
Then I realized that all my files are already backed up in the T.C.
+*is this correct?*+
sso I can delete anything on my hard drive that I want?
+*is this correct?*+
thanks!!!

If your TC is setup and working correctly almost all files - especially all user created files - are probably backed up - but...
How do you intend to use the backup files on the TC? You cannot access them directly like the originals on your HD. In order to use a file backed up to your TC you have to restore it to your HD via Time Machine first.
If you're OK with that I'd look at the Time Machine options to make sure you haven't excluded anything from backup that you intend to delete from your HD and then recover again later.

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