SUMMARY
The hardest problems of pure and applied science can only be solved by the open collaboration of the world-wide scientific community. Kenneth G Wilson (1936 - ) American theoretical physicist and Nobel Prize winner.With this special edition - a first for the South African Journal of Industrial Engineering - the celebration of 25 years of academic publishing is continued. It also heralds the first ever instance where a volume of SAJIE will have three numbers - it is envisaged that this will be continued with future volumes given the significant increase in articles in the SAJIE review process.