However, the lack of a plausible mechanism and inconclusive clinical trials have led many to conclude that it works only because people expect it to make them feel better.

However, skepticism remained because many people feel that establishing causation requires elucidating a plausible mechanism by which the effect occurs, he recalled.

But lots of compounds with plausible mechanisms await a verdict.

The most plausible mechanism accounting for the symptoms involves a dose-dependent release of certain cytokines, an event which occurs by inhaled metal oxide fumes which injure the lung cells.

This presents a plausible mechanism for the initial stages of planetary formation, since particles of this size do not have sufficient gravity to cause this phenomenon.