Lucas is a research scientist in the PAIR group in Google Research and works on visualisation, machine learning, explainability and language models, and explores how people can productively be involved with machine learning systems. Previously, he was Chief Scientist at Jigsaw where founded the R&D efforts. He has worked on range of topics including security, formal logics, machine learning, and data visualization. For example he worked on, uProxy & Outline, Project Shield, DigitalAttackMap; Syria Defection Tracker, unfiltered.news, Conversation AI and the Perspective API. Before Google, Lucas completed his PhD and worked at the University of Edinburgh on the automation of mathematical reasoning and graphical languages mostly applied to quantum information. He also helped run a non-profit working towards more rational and informed discussion and decision making, and was a co-founder of TheoryMine - a playful take on automating mathematical discovery.