23 other inventors created electric incandescent light bulbs prior to Thomas Edison. Edison is renowned primarily because he was the first to figure out the business model of electric lighting. Simultaneous independent invention is the norm, true for minor as well as major leaps like calculus, steam engines and the transistor. […] If Alexander Graham Bell had not secured the patent for inventing the telephone, Elisha Gray would have gotten it because they both applied for the telephone patent on the same day (Feb 14, 1876).