This is a timely reappraisal of one of Oliver Sacks’ less well-known works. The authors argue that the sense of detachment from his leg that Sacks felt after his injury and surgery was ‘functional/psychogenic’. 2 Stone and colleagues take Sacks’ account at face value and are at pains to label it repeatedly as ‘genuine’. Their aim is to go beyond Cartesian dualism, a common aspiration but one ha...

We prove that the Sacks forcing collapses the continuum onto d, answering the question of Carlson and Laver. Next we prove that if a proper forcing of the size at most continuum collapses ω2 then it forces ♦ω1 . Research partially supported by KBN 654/2/91 Research partially supported by “Basic Research Foundation” administered by The Israel Academy of Sciences and Humanities. Publication 475.

Sacks [Sa1966a] asks if the metarecursively enumerable degrees are elementarily equivalent to the r.e. degrees. In unpublished work, Slaman and Shore proved that they are not. This paper provides a simpler proof of that result and characterizes the degree of the theory as O(ω) or, equivalently, that of the truth set of LωCK 1 .

Indirect genetic effects (IGEs) are heritable effects of an individual on phenotypic values of others, and may result from social interactions. We determined the behavioural consequences of selection for IGEs for growth (IGEg) in pigs in a G × E treatment design. Pigs (n = 480) were selected for high versus low IGEg with a contrast of 14 g average daily gain and were housed in either barren or ...

A class of recursively enumerable sets may be classified either as an object in itself — the range of a two-place function in the obvious way — or by means of the corresponding set of indices. The latter approach is not only more precise but also, as we show below, provides an alternative method for solving certain problems on recursively enumerable sets and their degrees of unsolvability. The ...