As time progressed, mathematics and the sciences left the umbrella of the School of Mines. Mining engineering became its own profession, and engineering, as a discipline, began to fragment. Today, many of its pieces are visible as Departments within schools of engineering. Thus, at Columbia, the school of engineering grew around mines. Engineering is a profession.
Engineering is a licensed profession .
The National Society of Professional Engineers . In most cases, you begin with a bachelor's degree that has been accredited by ABET, the Accreditation Board for Engineering and Technology . After a certain number of years have passed, wherein you work under the supervision, or along side, PEs, you can then apply to take the PE, or Professional Engineer, examination. After you succeed, you are licensed to practice. Being licensed to practice means you take professional responsibility for the engineering you undertake.