@BaldEagle: so, we've got the magic env-var. Anytime anyone wants to find Choco, he just looks into that magic env-var, provided that he cares to support Choco. Your OS does not care about Choco, Java, or whatever, nor it cares about their custom env-vars. Chocolatey install windows. That's yet another user application.

Unlike the original Karate Kid movie, this remake doesn't feature any karate. The martial art we see here is kung fu. It's set in Beijing, as opposed to LA, and Jackie Chan, playing Mr Han, is teaching 12-year-old Dre Parker (Jaden Smith) kung fu – so he can defend himself against playground bullies. The focus on kung fu is a good thing: karate is just one form of martial art, while kung fu encompasses all of them.

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Some of the kung fu sequences are pure fairytale. Mr Han teaches Dre a technique called 'jacket on, jacket off'. He makes the boy stand out in the yard for days on end, taking his jacket off, putting it on the ground, and picking it up again. Then Mr Han attacks him, shouting: 'Jacket off!' Dre survives the onslaught by using this derobing motion, without having had a proper lesson. In reality, you teach someone practically: someone has a punch thrown at them, and you show them how to defend themselves. You don't just ask them to throw their jacket on the floor.

I did like the film's positive ethos, however. At one point we see a bad kung fu school, run by a tyrant who teaches students to show no mercy. But Mr Han, rightly, teaches Dre to have respect, both for his mother and for his opponents. In kung fu, you have to have respect: whoever comes through my door has to bow, and I don't teach thugs. But if, like Dre, you're being bullied, it's a good idea to learn kung fu – not so you can punch the bullies, but so you can say: 'You're not going to mess with me,' before it gets physical.

Overall, this film felt much less Hollywood-ised than the original. Most of the other techniques shown are pretty accurate. But it's annoying we're not told how long Dre trains for before defeating the bullies, who have all trained for at least six years. Years of practice on the part of the baddie mean nothing because good always overcomes evil. In reality, of course, that's not always the case.

Tim Prescott is a chief instructor in free spirit fist kung fu based in Surbiton, London;see kungfulondon.com. The Karate Kid is on general release.