Can you put assumptions in a journey map? If so, when is it ok to work assumption-based, and when do you need to be sure that you make decisions based on real customer insights?
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This is part of a Q&A video series with professional journey mapping tips from our experts Daniel Ewerman, CEO here at Custellence and Marc Fonteijn, host of renowned Service Design Show. 

The questions come from participants in the Perfect Map Course.