I'm kinda sure that I have seen direct links to answers posted before. How can I get a link to a particular answer? Or am I wrong?
Questions and answers are followed by several links, one of which is "share." Clicking "share" opens a little modal window with the permalink in a text box and a button that lets you copy it to your clipboard. But you can also right-click (or long-tap) the "share" link and copy it to the clipboard using the context menu in your browser, same as other links.
The "share" link includes your user number after the question/answer ID number. If you don't want people who follow your link to know that it came from you, it's fine to leave the user number off. The user-identified links are how you earn the Announcer, Booster, and Publicist badges.
For a direct link to a specific comment, right-click its timestamp.