I am extremely grateful to work with the following excellent collaborators, who are ordered alphabetically:

• Mehdi Bagherzadeh (Oakland University)
• Derek Bronish (SpaceX)
• Johan Dovland (University of Oslo)
• Phil Greenwood (Relative Insight)
• Hidehiko Masuhara (Tokyo Institute of Technology)
• Benjamin Muskalla (GitHub)
• Awais Rashid (University of Bristol)
• Anita Raja (CUNY Hunter College)
• Baishakhi Ray (Columbia University)
• Atanas Rountev (Ohio State University)
• Jason Sawin (University of St. Thomas)
• Neelam Soundarajan (Ohio State University)
• Takuya Watanabe (Edirium K.K.)
• Harry Xu (UCLA)