Ada Lovelace & Lillian Gilbreth paved the path for human interaction with computer, where the computer power later became part of human life. Ada Lovelace, the first computer programmer that laid out the blueprint, where computer would become the essential tools for everyday life. She worked along side with Charles Babbage, the father of computer. She married William King later. Lovelace worked with Babbage, where she invented the algorithm. Babbage was the one who assigned the task and Lovelace was the one who solved the problem.
Lillian Gilbreth, on the other hand, was the American pioneer with her husband in their engineering. She continued to work on industrial engineer after her husband died. In other words, she was on her own in pursuing her interests that later benefits us all. The collaboration with G.E to improve the efficiency of kitchen from fridge door, etc. Her work changed how humans interact with every day objects that later further bring improved till today.