there is now a premanent starting filesystem (produced from calling [self saveFileSystemToJSON] once after making dummy files. Now all you gotta do is populate it from here on out. No changes are saved to this file system because we haven't implemented saving on exit or changes or crash yet (saveFileSystemToJSON that is). Next change, in 'isValidPath' I got rid of the 'EXCLAMATION' operator that was causing the method to return the opposite result from what it ws supposed to. I cahnged the assignment of the _documentsDirectory variable to match what I did in my HW3, the way we were assigning the documents directory before was somehow wrong (even though the paths print identically) (extra slash maybe?) Also changed teh way we append the name 'filesystem.json' onto the end of the documents path, instead of stringByAppendingString I used 'stringByAppendingPathComponent' the former dididn't work the latter did.