Compute the current effective strength of a memory trace using the Ebbinghaus forgetting curve:
S(t) = S₀ · e^(-Δt / stability)
where Δt = now - lastAccessedAt.
Compute the current effective strength of a memory trace using the Ebbinghaus forgetting curve:
S(t) = S₀ · e^(-Δt / stability)
where Δt = now - lastAccessedAt.