Upper and lower limits on columns (vars) in discovery:

Max story creations per org per month

In what order does Einstein Discovery present the insights that it uncovers?

Is there a need for a separate Permission Set Licence for an Analytics app?

A company's Salesforce org has multi-currency enabled. This company's business intelligence team used Einstein Analytics to build a dataflow that creates a dataset, "OpportunityDataSet". This dataset is populated with data extracted from the standard object, Opportunity. One of the extracted fields is the standard field, Amount.
If a user explores the "OpportunityDataSet" in Einstein Analytics, in which currency will the Amount values be shown?