The document discusses various shoe concepts and technologies that may exist in the future, within 3-15 years. Some of the concepts discussed include shoes made from more environmentally friendly materials instead of leather, shoes that automatically close around the foot without effort, shoes that track health metrics like diet and steps, and shoes with integrated weapons like guns for self defense. The document also proposes a concept for indoor gaming shoes to be launched in 2010, outlining technical, ergonomic, aesthetic, manufacturing, and market requirements.