On 04/16/2015 08:34 PM, John R Levine wrote:
The most tedious and unhelpful discussions here have implicitly (or
perhaps explicitly) assumed that receiver nontechnical costs don't
matter, then repeatedly pointed out the true but useless fact that
there are single party mediator changes with trivial technical costs.


Useless because it presumes the non-technical costs of those changes are
high?

At least, we need to look at what non-technical costs they push onto other parties.

Some changes have insignificant non-techincal costs and are not controversial, e.g., adding a List-ID header for the benefit of recipients who know how to use it. Changes that seem similar may have quite different costs, e.g., adding a List-ID and removing subject tags, forcing recipients to change the way they sort and organize their incoming messages.

I (think I) understand what you mean and I sympathize with your reasoning. But how are we supposed to compare non-technical costs with technical costs? And what would be the formula to make a fair comparison between Technical/Non-technical Costs for Big/Small Originators/Mediators/Receivers? The concept of technical vs non-technical cost at least doubles the six combinations, mentioned by Scott.

/rolf

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