David’s War Story: Let it Bleed

David Hoard is an interaction designer and here he shares his second story.

Years ago we were re-designing a device to cool a patient’s blood during open heart surgery. This protects the body during the procedure. The client arranged for us to witness a heart operation, and we were pretty excited about that. My only concern was that I would faint from seeing blood.

Research day came and we headed to a nearby hospital, prepared to be serious, professional researchers. A nurse helped us gown up and get ready. I was expecting the operating room to be a sober technical environment, and I saw that was true. The equipment was stainless steel; the walls and floor were blue-green tile. I anticipated that this would be an orderly collection of findings.

But as soon as the surgery team started to come in, the vibe changed. The nurses chatted. The anesthesiologist joked. The patient, a man in his late fifties, was casually whisked in on a gurney.

The nurses chatted with the patient as they put on the anesthesia mask and he drifted off to sleep. They slathered him with a brown antiseptic wash. It made his skin look like a basted turkey, and I thought “He’s just another piece of meat to them.”

Then things really got started. The surgeon came in and straight away had the nurse hit the music. The sound of the Rolling Stones filled the O.R. The jokes and banter increased. The technician operating the blood cooling machines set to work and we tried to stay focused on that. But it was futile.

When the patient was sufficiently chilled, they set to work with a powered saw and cut open his sternum. They were ripping a person’s body open, and they did it while talking about sport scores.

They pried the chest cavity open and prepared for a bypass procedure. They took a vein from the man’s leg that would be used as a new artery for the heart. “How you doing back there?” came the question from the surgeon. “Good!” we replied, and I realized I wasn’t woozy at all. It was all too fascinating.

It was at that moment that the most surprising thing happened. The surgeon said “How do you like this?” as he put his hand down in the chest and lifted the beating heart up and out. The music thumped, the heart pumped and the surgeon gave us a wicked grin. He knew full well he was holding the patient’s life in his hands. But at the same time, it was all in a days work for him. No big deal.

After completing the bypass, they finished their work and stapled the man up. The surgeon cleaned up and zoomed off to something else important. Before we knew it our research session was over.

As for our actual goal of observing blood-cooling machine, we did gather information about that, but the bigger lesson was in understanding the true nature of our users. We expected one-dimensional experts and we saw three-dimensional humans.

My work on projects like this has taught me that experts are simply regular humans with a specialized job to do. Help them be smarter, help them be more successful. But don’t forget the human underneath that needs ease of learning, ease of use and help preventing errors. Humans don’t want to devote 100% of their brainpower to your product. They need to reserve some for cracking jokes and singing with the music.

When your research goes in an unexpected direction, go with the flow and let the Stones play. You might learn something more meaningful than your original plan.


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