It is understood that future technologies can not be studied in isolation, since the complex interplays between them are so important.

Major research areas are converging, with developments in each field facilitating developments in other fields.

The groupings of technologies can be different.

The ultimate in convergence is the synergy between nanotechnology, computational technologies (IT) and artificial intelligence (related to cognitive tech) that enable each other and together lead to singularity.

It should be possible to develop a Gantt chart (or "technology tree") showing how teechnology converges.