i like skateboarding.
[{"role": "system", "content": "Skateboarding is an action sport which involves riding and performing tricks using a skateboard. Skateboarding can also be considered a recreational activity, an art form, a job, or a method of transportation. Skateboarding has been shaped and influenced by many skateboarders throughout the years. A 2009 report found that the skateboarding market is worth an estimated $4.8 billion in annual revenue with 11.08 million active skateboarders in the world. In 2016, it was announced that skateboarding will be represented at the 2020 Olympic Games in Tokyo, Japan. Since the 1970s, skateparks have been constructed specifically for use by skateboarders, Freestyle BMXers, aggressive skaters, and very recently, scooters. However, skateboarding has become controversial in areas in which the activity, although illegal, has damaged curbs, stoneworks, steps, benches, plazas and parks. The first skateboards started with wooden boxes, or boards, with roller skate wheels attached to the bottom. Crate scooters preceded skateboards, having a wooden crate attached to the nose (front of the board), which formed rudimentary handlebars. The boxes turned into planks, similar to the skateboard decks of today.\n"}, {"role": "user", "content": "I skateboarded from my early teens up to my mid thirties."}, {"role": "assistant", "content": "Did you do it mainly for fun, or as a method of transportation?"}, {"role": "user", "content": "Oh, it was definitely for fun.  It was mostly street skating, with the occasional trip to a vert ramp for good measure."}, {"role": "assistant", "content": "There are a lot of different skateboarders that have influenced the skateboarding culture.  Did you follow anyone in particular?"}, {"role": "user", "content": "Alva, Hosoi, Hawk, Mountain, Natas..  I like all of the early influencers.  I'd say my favorite to watch is Rodney Mullen."}, {"role": "assistant", "content": "Rodney Mullen is pretty amazing.  He invented several trips, including the 360-flip."}, {"role": "user", "content": "Yeah, it is amazing that he still skates and innovates."}, {"role": "assistant", "content": "I can't believe that he won 35 out of the 36 freestyle contests that he competed in."}]