Nintento Wii as an educational implement. Reality or fiction?

The organism – reality or fiction?

Dark Energy : fiction or reality ?

Is Dark Energy justified as an alternative to the cosmological constant Λ in order to explain the acceleration of the cosmic expansion ? It turns out that a straightforward dimensional analysis of Einstein’s equation provides us with clear evidences that the geometrical nature of Λ is the only viable source to this phenomenon, in addition of the application of Ockham’s razor principle. This con...

Rossi’s reactors--reality or fiction?

A tabletop prototype of a new kind of nuclear reactor was demonstrated recently at the University of Bologna. This note addresses conceptual difficulties associated with the reported features of the device.

Molecular reduction: reality or fiction?

Neurophysiological research suggests our mental life is related to the cellular processes of particular nerves. In the spirit of Occam’s razor, some authors take these connections as reductions of psychological terms and kinds to molecularbiological mechanisms and patterns. Bickle’s ‘intervene cellularly/molecularly and track behaviourally’ reduction is one example of this. Here the mental is b...

Oral transmission of HIV, reality or fiction? An update.

Human immunodeficiency virus (HIV) and many other viruses can be isolated in blood and body fluids, including saliva, and can be transmitted by genital-genital and especially anal-genital sexual activity. The risk of transmission of HIV via oral sexual practices is very low. Unlike other mucosal areas of the body, the oral cavity appears to be an extremely uncommon transmission route for HIV. W...