Sometimes, even the smallest of gestures takes on huge importance.

“I’ve got a load of stickers that somebody gave me that say ‘good science, well done’,” Tregoning says. “They have acquired this kind of cult status. People are like, ‘Have I done enough to get a sticker?’”

Ziyin Wang, a postdoctoral immunologist who has worked with Tregoning for five years, laughs in agreement. “We take these stickers very seriously. John appreciates small achievements, like when you learn a new technique, or when you have overcome a very difficult experiment — he would really dish out the stickers.”

Wang keeps one sticker on her work notebook for its special significance. In the second year of her PhD, also with Tregoning, many experiments weren’t working. “I had just figured out why it was going wrong. John gave me a sticker and said, “This is what science is, really. Experiments fail probably 80% of the time. But just the process of finding out why you went wrong, and how to improve it, is really important.’”

“He makes it known that he appreciates what we do, regardless of the result.”