For LOOPS see: http://www.markstefik.com/?page_id=334 http://www.markstefik.com/?page_id=334 One of the main influences was that CLOS was supposed to be flexib

For LOOPS see: http://www.markstefik.com/?page_id=334 http://www.markstefik.com/?page_id=334 One of the main influences was that CLOS was supposed to be flexible enough to implement a Frame system - which is usually more dynamic than even CLOS. The MOP (meta object protocol) can act as the infrastructure for that.