Product managers deal with uncertancy every day. Their work is mainly based on hypothesis - and at the same time they have to proof evidence that they are right. As in every system, doing or changing to many things at the same time makes it difficult to proof evidence. The hypothesis board is a kanban approach to product-managment based on the idea that an organisation can only handle a certain amount of experiments at the same time - and those should be explicit to be able to learn from them. So having a WIP-Limit on those experiments and at the same time using kanban-mechanisms to make them explicit, speed them up and learn from them combines lean kanban with elements of lean startup and lean ux.
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