Invention can happen with a single person, but it takes a long time and lot of efforts for that to become an Innovation.
Charles Babbage was the first person who invented the programmable computer in the earlier 19th Century. The following years and decades transformed the whole meaning and design of the Computer.
What we are dealing with today is the transformation of the Inventions to Innovations which can reach people and make lives much better.
Innovations deal with identifying solutions to problems in simplistic manner. There might be an existing solution, but if we can better that up, it is Innovation.
Inventions happen vary rare, and even if they happen, it takes a long time for them to come into light.
What should we focus on – Invention or Innovation?
Innovation. Chain of innovations can lead to an invention.