The Dyad
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A dyad is a two-person group, the smallest possible and the least stable, because either member's departure ends it entirely.
Show
A marriage or a business partnership survives only while both parties remain in it.
Watch for
Do not read smallest as weakest-tie — dyads are the most intimate groups, not the least significant.