When I was a kid around 1980, my brother, Dave, let me borrow his Rubics Cube. I was able to get one side completed. He showed me a way to move the cube in a certain pattern as to not disrupt the other side. This allowed me to get all the corners aligned. Once I could get all the corners in place, it was just a matter of filling in the middle pieces until all colors were in place.
I remember working a contract in 2004 doing Crystal Reports, T-SQL, VB.net. The secretary had a cube on her desk. One night I completed the cube and placed it back on the desk. The next day everyone was talking about who completed the cube. It was a mystery until I finally gave a demo of how its done.
At another job, the assistant director had a cube which I completed. Then he gave me a cube with 4 squares per side and one with 16 squares per side, which all have the same pattern to solve.
Another time at a Starbucks I sat next to a guy that had a cube. I asked to see it. He was talking about how difficult it was and I listened politely. When he was through talking I handed him back the cube completed.
My wife gave me a cube with dogs on each side which I have on my desk at work. It's a bit more challenging but sometimes I work on it in between tickets.