Denis 'Jaromil' Roio is the main author of the GNU/Linux Live CD Dyne:bolic as well as of a number of audiovisual tools. He is also an artist who has been part of international exhibitions such as CODeDOC II by the Whitney Museum Artport and speaker on conferences such as Ars Electronica. Inspired by Richard Stallman's "free as in free speech" approach as well as liberatory politics, Jaromil seeks to transgress borders between art and code, social activism and research and development. This text is an introduction and overview about Jaromil's life and ideas, based on an interview conducted in June 2006 in Amsterdam. At the taxi-to-praxi research workshop on 21st of April he talked about Solid Knowledge.