"Knowledge advances by steps, and not by leaps" Lord Macaulay, 1823
Just as they reached a staircase, Ratio began to think the probability that they had been going around in circles was about 74 percent.
The staircase led upwards.
L started up without pausing.
Ratio felt that he could nothing else than follow.
Half and hour later and the staircase showed no signs of stoping and neither did L.