Speculation.

How did we learn as infants?

We learn by a combination of:

• innate curiosity,
• innate drives,
• mimicking the people around us.

We do the same as adults at a subconscious level.

Eg: The concept of an anthropomorphic God can be a useful mental device.

Eg: Bhakti for Krishna. Namely, love and devotion for Krishna. Surrendering to Krishna.

Eg: We are an average of our friends group.