I worked at a company in the suburbs of Portland for about a year and was really impressed when they hired a guy in his 60s to do a job currently being done by 4-5 people in their late 20s (a mix of males and females). I wouldn't necessarily say he was slow in picking up stuff, but his style of learning is was definitely a lot different. He was a great asset and it alleviated some of the subconscious biases I had myself.