@aras and the elusive Tier 4: no simple thing works so it has to be a complex solution. Much heated discussion is in Tier 2 situations where people think they are in a Tier 4 scenario. The other way also exists: folks defending a Tier 4 solution against people thinking they have to shut down a Tier 2 solution against their Tier 3 while missing their proposal is Tier 1.
Ok that got confusing fast. Good Tier 4 examples are Unicode and Timezones.
aras
dneto