[Socionics] How does the Vital Block (7th and 8th function) manifests?

How does the Vital Block (7th and 8th functions) manifests in your life (or in each sociotype)?

7th and 8th functions are strong unvalued functions, 3D (ignoring, accepting) and 4D (demonstrative, producing) respectively.

Experiences, observations, opinions, explanations and good pieces of theory are welcome.