Suppose $$P(\text{feature present at time} \ t \ \text{and} \ t+\Delta t) = \beta^{2}+\beta(1-\beta) \exp(\Delta t/\tau)$$
where $\tau = 1/(\pi_{01}+\pi_{10})$. What is $\tau$?
Suppose $$P(\text{feature present at time} \ t \ \text{and} \ t+\Delta t) = \beta^{2}+\beta(1-\beta) \exp(\Delta t/\tau)$$
where $\tau = 1/(\pi_{01}+\pi_{10})$. What is $\tau$?