In most group signatures, the length of group public key has linear relation with the number of group member at least, so it is hard to adopt such schemes when the number of group member is large.

Our species is not what most think it is, a member of the large "cat" family. Lions are not at all related to large cats such as Tiger, Panther or Leopard.

A byte is at least large enough to contain any member of the basic execution character set and is composed of a contiguous sequence of bits, the number of which is implementation-defined.