Including deceleration in calculations, the age of the universe would be greater than the Hubble time, due to the universe expanding faster in the past.
Step-by-step explanation:
When taking into account the effects of deceleration on the calculation of the age of the universe, and comparing it to the Hubble time, the age we would calculate is greater than the Hubble time. This is because deceleration implies that the universe was expanding more quickly in the past than it is now. Therefore, if we use the current expansion rate to estimate the age, assuming it has been constant, we will overestimate the time it took for galaxies to reach their current separations. The best current estimate notes that the universe is 13.8 billion years old, which is very close to the age suggested by the reciprocality of the Hubble constant (1/H).