This paper explores the history of the ideas behind concurrent enginee
ring from the end of the 19th century until the 1960's, Concurrent eng
ineering is the relatively recent term that is applied to the engineer
ing design philosophy of crossfunctional cooperation in order to creat
e products that are better, cheaper, and more quickly brought to marke
t. The principles of concurrent engineering that are traced by this pa
per are: manufacturing and functional design constraints need to be co
nsidered simultaneously; combining of people with different functional
backgrounds into a design team is a useful way to combine the differe
nt knowledge bases; engineering designers must bear in mind customer p
references during the design process; and time to market is an importa
nt determinant of eventual success in the market. None of these princi
ples is by itself surprising; concurrent engineering has led to their
propagation to many people and firms in the engineering world, The aut
hor has examined the engineering literature in order to locate the exi
stence of similar themes in published engineering thought, All of thes
e themes have recurred often in the literature, Concurrent engineering
can be seen therefore as a summary of best practice in product develo
pment, rather than the adoption of a radically new set of ideas. The p
aper suggests some reasons that concurrent engineering ideas may not h
ave been adopted more widely,