He developed a theory that is used to determine whether firms involved in competitive bids for business are genuinely competing, or whether they are secretly colluding. This theory will allow market regulators to assess competition or collusion by observing a firm's strategic behaviour over time. Dr. Deb's research also outlines a model that allows governments to choose an alternate bidder if there is a distinct social benefit to doing so. Ontarians will benefit greatly from this fair-competition approach to business in support of the province's competitive economy.