Here is a very brief articulation of some of the interpretations of quantum mechanics; I couldn't possibly include all interpretations but I have included the "main" ideas and some other approaches. Although I personally favour the Consistent Histories interpretation this is given in no particular order.

GRW supplements the Schrodinger equation with a "collapse term" which restricts its evolution, over time. In this approach mass-density (not measurement) induces collapse, each non-relativistic particle is associated with an inbuilt probabilistic tendency to reduce from a wave to a particle and a given time constant $10^{15}s$ the average time it takes after which it will behave as a particle, not a wave. The average time becomes much shorter when particles are entangled and amassed in a group (e.g. a classical system). The probability of collapse to any state is given by the Born rule.

Strengths:

Its been suggested that the break in unitar…

**Ghirardi-Rimini-Weber**

GRW supplements the Schrodinger equation with a "collapse term" which restricts its evolution, over time. In this approach mass-density (not measurement) induces collapse, each non-relativistic particle is associated with an inbuilt probabilistic tendency to reduce from a wave to a particle and a given time constant $10^{15}s$ the average time it takes after which it will behave as a particle, not a wave. The average time becomes much shorter when particles are entangled and amassed in a group (e.g. a classical system). The probability of collapse to any state is given by the Born rule.

Strengths:

Its been suggested that the break in unitar…