[mektrik]

I'm an advertiser, worked agency & in-house, and have used approaches like Causal's in the past.

As the other comments mention, simulations aren't going to let you answer these questions if you can't already answer them, but they can provide you with uncertainty ranges which are valuable in their own right.

Particularly if you're agency-side, being able to go to a client with an uncertainty range for some forecasted KPI is so much better than having to give a single number. Works for them because they can understand the risk, and works for you because you're not going to be held to a single number (which you're never likely to hit in practice).

[jerednel]

True - i wasn' really asking about the methodology in question moreso the linked-to SaaS offering.