Conversation so far:
can you write a wikipedia page about yourself
Writing an autobiography on Wikipedia is an example of conflict of interest editing and is strongly discouraged.
Why is writing a wikipedia page about yourself a conflict of interest
Readers expect to find neutral articles written independently of their subject, not corporate or personal webpages, or platforms for advertising and self promotion.
Can you edit a wikipedia page
Wikipedia is a Wiki, which means that anyone can easily edit any unprotected article and have those changes posted immediately to that page.

Question: How do you know a page is protected
Self-contained rewrite: How do you know a wikipedia page is protected