摘要: I feel that the best way for me to write a paper honors Sir Nevill Mott is continue discussion on points of our mutual concern not one who rests his laurels but in ceaseless struggle with nature, using power mind as searchlight into unknown; case amorphous materials, world disorder. It unfortunate this negative emotive word, disorder, used describe materials since believe operative description uniqueness really “freedom”-freedom from restrictions crystalline symmetry, freedom stoichiometry, and especially choices bonding nearest neighbor relationships. The multiple orbital relationships permitted by removal restrictions, while numerous, are specific and, manner number which they co-exist an material, definable well being unique.