flexible, or flexibility in astro empires, is being able to perform 2 uses. not at the same time but when the need arrises, they can take on the job of the specialist class while bringing their own advantages.
like my page fleets vs deffences, ill include examples:
corvettes can be both attackers and scouts
ion turrets can both lure enemies and destroy them.
what is the point of this? well they have several advantages,
in a crisis, when you dont have much time. you can addapt youre fleet to make up for problems in youre fleet
you dont need to spend as many credits