"Human nature is human nature," he said, and so, without counsel present in a grand jury proceeding, an athlete might think to protect his livelihood by denying any connection to steroids -- only to have a connection proved by federal authorities. He might then face charges of perjury with his grand jury testimony as evidence. The result would be a loss of the constitutional guarantee that no citizen can be required to give testimony against himself."To me, that's more frightening than all the steroid users put together," said Marvin Miller, a wise man.