What is redundancy?
-- why is it a problem when part of an e-r data model is redundant?
-- is redundancy one concept or are there levels of redundancy?

assuming you are in the home page.

1) go to the upper right hand corner

2) click on your "profile picture"

3) go down to "edit profile"

4) it should be titled as "edit your profile", click on "profile picture"

5) choose a file

6) press "change"

you're profile picture is updated

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answer inspecting packets in isolation from their context;