And if you walk in there, realize it's a restricted area, and start opening up file cabinets and reading confidential documents, you're now in jail. the security guard being there or not makes zero legal difference - things not being locked or blocked does not give you rights to them. thank you for proving yourself wrong.

you mistakenly wandering in is not illegal. however your strawman is not what the OP did. it's a paragraph of text for crying out loud. please at least read the story before commenting.