The Source Of Predictability: Cold Calling 2.0 Funnel Here is the source your PREDICTABLE REVENUE comes from: predictable lead generation. For companies selling high-value products or services, the most predictable source of leads (whether or not it’s the largest source) can be outbound sales prospecting. Here is a sample funnel that breaks out the prospecting stages: As you can see, if you experiment with your process, people and activities to find how to generate a predictable flow of new qualified opportunities, and have a consistent sales closing rate, you can begin to generate highly predictable revenue and proactive growth. Revenue Predictability = The Funnel + Average Deal Size + Time In addition to these activities and results funnel, you also have to know how long things take in order to have more predictability.