Commercial viabilityContinuous improvementElectric light bulbExperimentationFailure as learninginnovationInventionLegacyMenlo Park laboratoryPatentspersistenceThomas Edisonํ ๋ง์ค ์๋์จ 20 Aug 2025 Thomas Edison. [ํ ๋ง์ค ์๋์จ] - There is always a better way. "There is always a better way." - Thomas Edison. "๋ ์ข์ ๋ฐฉ๋ฒ์ ์ธ์ ๋ ์กด์ฌํ๋ค." - ํ ๋ง์ค ์๋์จ…