Fear the ZEBRA: Zero Evidence But Really Arrogant!
The meeting room animal that's worse than the HiPPO
By Tristan Kromer · Quick Answer: Z.E.B.R.A. stands for Zero Evidence But Really Arrogant — someone who pushes decisions with strong conviction but zero supporting data. As product managers, we should fear the ZEBRA even more than the HiPPO (Highest Paid Person’s Opinion), because confidence without evidence is far more dangerous than rank-based influence. It’s a lighthearted but effective reminder to keep ourselves honest and data-driven in every meeting.
Announcing the “Fear the Z.E.B.R.A.” coffee mug! One year ago, we published In Defense of the Hi.P.P.O. 
This is where we coined the term Z.E.B.R.A., which stands for Zero Evidence But Really Arrogant. The Zebra is a far more disreputable animal than the hippo. Brian Wood said he wanted a “Fear the Z.E.B.R.A.” coffee mug for meetings. We assume he was speaking for all of you. Well it took a while, but your mug has arrived!
Pick up your own Z.E.B.R.A. Mug
Just a helpful reminder to keep yourself honest and data-driven. Enjoy with your beverage of choice!
Frequently Asked Questions
What does ZEBRA stand for in business decision-making?
Z.E.B.R.A. stands for Zero Evidence But Really Arrogant. It describes someone who makes decisions with strong conviction but no data to back them up. As product managers, we coined this term as a counterpart to the HiPPO (Highest Paid Person’s Opinion), arguing that the ZEBRA is actually the more disreputable animal — confidence without evidence is far more dangerous than rank-based influence.
What’s the difference between a HiPPO and a ZEBRA in meetings?
A HiPPO (Highest Paid Person’s Opinion) refers to decisions driven by the most senior person in the room. A ZEBRA (Zero Evidence But Really Arrogant) refers to anyone — regardless of rank — who pushes opinions with zero supporting data but plenty of arrogance. The ZEBRA is considered worse because at least a HiPPO may have experience-based intuition, while a ZEBRA has nothing but confidence.
How can I remind my team to stay data-driven?
Simple, visible reminders can go a long way. The “Fear the Z.E.B.R.A.” concept works as a lighthearted but effective nudge to keep ourselves honest in meetings and decision-making. Whether it’s a mug on your desk or a shared team vocabulary, having a shorthand for “where’s your evidence?” helps us call out arrogance-without-data in a constructive, non-confrontational way.
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