`:Hi Jc37, :Your advocacy of a block was original enough for me to remember you. :Your suggestion was interesting, and I supported most of it. I wish that you had read what I had written with greater care and that you had refrained from the word ``disruptive``. :Thanks for writing. Such communications are usually more persuasive when accompanied by admission of errors-what the totalitarians used to call ``self and mutual criticism``.    `