A blog, by tradition, is an online journal. We write the posts, and when we enable post titles, we choose the post titles. When we enable post pages and post titles, the URLs of the posts are a function of the dates, and the titles, of the posts. We can choose the titles of the posts, but the Blogger post editor chooses the URLs. This is a key component in the Blogger Infrastructure . The static page editor ("Edit Pages") uses the same engine as the Post Editor, and Static Pages (aka "Pages") use a similar basic URL structure.
What Blogger won't tell you