Our Team BIM Collective Research Group Robin Stubbs Founder/Lead Researcher Envelope Linkedin Thumb-tack Gordon Chisholm Founder/Leader Researcher Envelope Linkedin Thumb-tack Brian Dempsey Co-Founder Envelope Linkedin Thumb-tack Dr. Ken Thomas Head of Engineering WIT Envelope Linkedin Thumb-tack Brian Hanrahan Research Assistant Envelope Linkedin Thumb-tack Paul Elliott Research Assistant Envelope Linkedin Thumb-tack Paul Elliott Research Assistant Envelope Linkedin Thumb-tack Craig Reynolds Research Assistant Envelope Alex Stubbs Research Assistant Envelope Linkedin