The first issue is how to make sure that people aren’t creating 100 profiles each (something that’s a real problem on sites today). This is where I expect data

The first issue is how to make sure that people aren’t creating 100 profiles each (something that’s a real problem on sites today). This is where I expect data breaches to “help”; as it becomes more and more ridiculous that our current identity schemes aren’t working, something better can be developed and act as a basis for a unique-by-birth profile that is as anonymous as you need it to be. Part of the problem of expertise would be solved by the natural upper limit on how much expertise is reasonable for one person to have. No one should be able to claim strong experience in more areas than they could have conceivably spent time learning/practicing. Therefore, if you’re going to make your profile claim expertise in something you know nothing about, you’d definitely be wasting your limited opportunity to comment and you wouldn’t be able to do that for everything. Also, if comments/votes/etc. on something are only permitted for people in related fields, an uninformed person’s ramblings might still be drowned out by the only other people commenting. Determining how to limit a profile is tricky. Some restrictions would be easy, e.g. a 14-year-old can’t claim 30 years experience in an industry. Some would be harder, perhaps enabled by webs of trust (e.g. as a side effect of employment, your employer adds credibility to your profile somehow in a particular area of expertise).