Some technological changes are incremental .
Shellac 78 rpm recordings are replaced by plastic 33 rpm recordings. Some technological changes are disruptive . A similar theory of technological impact would point out that the automobile destroyed whole industries, such as blacksmithing. Crime rates plummeted for such capital offenses as horse-thieving. Corporate America today has an army of consultants and academics paid to reassure the boss that it's incremental, that he's not a dinosaur waddling to the tar pits after the meteor landed .