William Fusfield's interesting essay "Mein Mißverständnis mit Miscevic" (Newsletter, volume 3, Numbers 3 and 4) prompts me to write with a rather different suggestion as to how critical rationalism might learn from critical theory: in the realm of ideas. For it seems to me that while there is much in Habermas and especially in the older critical theory that stands in need of criticism, there are two respects in which Habermas has done something from which critical rationalism itself should learn. What it should learn, however, is to develop something that is already implicit within its own intellectual resources.