The Power of Doubt – Becoming a Software Skeptic by Zeger van Hese Sketchnote by Marianne Duijst Posted on February 27, 2018February 27, 2018 Sketchnotes 1024 × 1200 Zeger van Hese – The Power of Doubt – Becoming a Software Skeptic (European Testing Conference 2018) The Power of Doubt – Becoming a Software Skeptic by Zeger van Hese (European Testing Conference)