 There is a great deal of controversy among philosophers about the implications of this type of research. Proponents of RTM are, of course, entirely happy with the idea that the scientific theories of what birds are doing can be taken at face value. Other philosophers maintain that if the scientific theories say that birds are computing an algorithm for determining a caching strategy, then this can only be read as a façon de parler. Still others will grant that animals have representations but go on to claim that these representation are of a lesser status, not to be confused with concepts (Brandom 1994, 2000, McDowell 1994).