Ken Watanabe, author of the best-selling Problem Solving 101: A Simple Book for Smart People (Portfolio). He is founder and CEO of Delta Studio, an education, entertainment and media company in Tokyo, where he is developing an educational TV show and a “brain game” for Nintendo. Formerly, he was a consultant at McKinsey & Co.
That's right, any problem -- from improving your company's bottom line to getting better at golf Five years ago, Ken…
