You make a good point. Mine are planted outside and of course they get a periodic sprinkling when it rains in the winter. But the soil is not staying wet constantly. In forced dormancy, indoors, the bulbs will shrink if they are too dry. On the reverse side, if the bulb is kept too wet during dormancy, especially if there is not good air circulation, the bulb will rot. So it's a balancing act between shrinking and rotting. I guess that everyone has to find the right conditions for their own bulbs.
