> Lisp use at first was restricted only to Academics Lisp was spreading in the 60s to everyone who had a mainframe or mini computer. In the 70s first applicati

> Lisp use at first was restricted only to Academics Lisp was spreading in the 60s to everyone who had a mainframe or mini computer. In the 70s first applications were built and companies like BBN, Xerox, IBM started to use Lisp. In the 80s Common Lisp was standardized upon a DARPA initiative to have a single Lisp language for the applications they were prototyping or deploying in the military. The military got huge applications for battle management, battle simulation&training (like SIMNET), planning, design & construction developed by contractors. > it was so inefficient that you even required a very special(and expensive) purpose computer to run it Lisp developers required a personal workstation and thus they co-invented them in the 70s. Machines with 1 Megabyte or more RAM for a single user. Machines where one could develop and work with programs like Macsyma, an early computer algebra system widely used in maths and physics. > creating compilation pathways and so on efficient execution of Lisp on non-special-purpose hardware was available in the 70s for example with Maclisp and in the 80s with Common Lisp.