This paper is a reexamination of the concept of a canned computer lab. The canned computer lab uses a stored computer program to perform calculations, analyze data, determine errors, and to ask questions after a student performs a lab. Primary use of the canned lab is for computer−disadvantaged institutions with no on−line facilities. The educational and software advantages and disadvantages of this approach are discussed. Conclusions and anti−conclusions reached after over two years use of canned labs are given. An appendix gives a sample output for the ballistic pendulum lab.