Global heating: Attention is not enough; we need acute and appropriate actions

Tackling HIV in MENA: Talk Is Not Enough–It Is Time for Bold Actions: A Response to Recent Commentaries

Why we need a generalized Darwinism, and why generalized Darwinism is not enough

Complex evolving systems, consisting of populations of varied and replicating entities are found in both nature and human society. There exists no alternative to the core Darwinian principles of variation, selection and inheritance to explain the evolution of such systems. Neither the actual existence of human intentionality nor the hypothetical possibility of Lamarckian acquired character inhe...

Rank Is Not Enough: Why We Need a Sociocultural Perspective to Understand Social Class

In the target article, Kraus, Tan, and Tannenbaum identify a key feature of the psychological experience of social class—perception of one’s rank vis-à-vis others. This rank-based perspective, which reveals the systematic influence of rank on psychological functioning, makes an important contribution to current and future theories of social class. Drawing out the significance of rank brings soc...

Seeing Is Not Enough for Sustained Visual Attention

Sustained visual attention is crucial to many developmental outcomes. We demonstrate that, consistent with the developmental systems view, sustained visual attention emerges from and is tightly tied to sensory motor coordination. We examined whether changes in manual behavior alter toddlers’ eye gaze by giving one group of children heavy toys that were hard to pick up, while giving another grou...

Not Enough Points Is Enough

Models of the untyped λ-calculus may be defined either as applicative structures satisfying a bunch of first order axioms, known as “λ-models”, or as (structures arising from) any reflexive object in a cartesian closed category (ccc, for brevity). These notions are tightly linked in the sense that: given a λ-model A, one may define a ccc in which A (the carrier set) is a reflexive object; conve...