930 Bertholn Antal, Dierkes, Child, Nonaka Some early models were based on feedback loops between the organization and its envir. oament, whereas others portrayed learning in terms of steps or phases usually starting a knowledge acquisition and continuing through diffusion and sense-making to actica and then storage. Recently, a spiral model has emerged as a way of capturing the dynamic process of knowledge creation Nonala and Takeuchi 1995) The current research landscape shows that all three types of models are worth developing further.