Possibilities of lower minimum speeds

What are the possibilities of reducing this minimum velocity of flight?

In all forms of transport, with the exception of flying, the maximum speed attainable is a major consideration. But in the exceptional case of flight it is equally important to obtain a low minimum speed as it is to obtain a high maximum speed. This low speed is of such importance that it is apt to be exag­gerated at the expense of the maximum speed. Whatever we say about obtaining a low landing speed, we must never forget that the chief advantage of flight over other means of transport depends on the high speed obtainable. But, provided we bear this in mind, everything must be done to reduce the landing (and taking off) speed, because only in this way can flying be made a popular and safe means of transport. The minimum speed of most light aero­planes is as much as 50 or 60 knots, and of some more than 100 knots.