I'm not certain that this will ever be a valid contribution to Wiki.

''How are you going to measure that?''

If other people contribute to it you've been validated!

''But the contribution has now totally changed''

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'''Warning:''' the mathematical formalism underpinning the following is still in early alpha.

To derive the WikiUncertaintyPrinciple from the HeisenbergUncertaintyPrinciple for quantum mechanics take {particle, position, momentum} and substitute {contribution, authorship, value}. 

'''Populist explanation'''

When I first saw Wiki I assumed that I would be able to measure the value of my contributions to it over time.  The paradox that has since emerged is that any time I measure the 'myness' of a contribution I lose all knowledge of its value, and once I measure the value I can no longer know how much is down to me.

''Alternative formulation: The value of any contribution is not absolute but is  affected (defined, even) by the observations others make about it.'' -- PaulHudson

So, collaborative contributions, those written and changed by multiple people, have more value than individual signed contributions, leading to the dreaded ThreadMode. I like that.  -- JeffGrigg

''This suggests, perhaps, the founding of QuantumWiki being as it subtly alludes to Schroedinger's cat. (see: http://www.emr.hibu.no/lars/eng/cat/Default.htm)'' --DaveMorgan

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See also WikiSingularity