Tatsuyoshi Saijo received a master's degree in economics from Hitotsubashi University in 1978 and a PhD from the University of Minnesota in 1985. He was an assistant professor at the University of California at Santa Barbara (1986-1991), professor at the Institute of Social and Economic Research, Osaka University (1995-2013), research associate at the California Institute of Technology (2002-2003), and program director at the Research Institute for Humanity and Nature (2017-2022). He has held positions at various institutions including the University of Tsukuba, Washington University at St. Louis, and Duke University. He is currently at the Future Design Research Center, Kyoto University of Advanced Science, developing innovative approaches to intergenerational sustainability.