A witty, exhilarating and mind-expanding exploration of the word of our times - data - with mathematician Dr Hannah Fry. Following in the footsteps of BBC Four's previous gleefully nerdy, award-winning maths films The Joy of Stats, Tails you Win - The Science of Chance and The Joy of Logic, this new high-tech romp reveals exactly what data is and how it is captured, stored, shared and made sense of. Fry also tells the story of the engineers of the data age, people most of us have never heard of despite the fact they brought about a technological and philosophical revolution.
For Hannah Fry, the joy of data is all about spotting patterns. She's Lecturer in the Mathematics of Cities at UCL as well as being the presenter of the BBC series Trainspotting Live and City in the Sky, and she sees data as the essential bridge between two universes - the tangible, noisy, messy world that we see and experience, and the clean, ordered, elegant world of maths, where everything can be captured beautifully with equations.
Along the way the film reveals the connection between Scrabble scores and online movie streaming, explains why a herd of Wiltshire dairy cows are wearing pedometers, and uncovers the remarkable network map of Wikipedia. What's the mystery link between 'marmalade' and 'One Direction'?
The Joy of Data also hails the giant contribution of Claude Shannon, the American mathematician and electrical engineer who, in an attempt to solve the problem of noisy telephone lines, devised a way to digitise all information. It was Shannon, father of the 'bit', who singlehandedly launched the 'information age'. Meanwhile, the green lawns of Britain's National Physical Laboratory host a race between its young apprentices in order to demonstrate how and why data moves quickly and successfully around modern data networks. It's all thanks to the brilliant technique first invented there in the 1960s by Welshman Donald Davies - packet switching - without which there would be no internet as we know it.
But what of the future, big data and artificial intelligence? Should we be worried by the pace of change, and what our own data could and should be used for? Ultimately, Fry concludes, data has empowered all of us. We must have machines at our side if we're to find patterns in the modern-day data deluge. But, Fry believes, regardless of AI and machine learning, it will always take us to find the meaning in them.
小品剧本杀，我挑的是外卖小哥的本子，这脸一看后面就得反杀
新人导演加一分，有很努力的在做悬念和结构，完成度也还不错
爸爸和弟弟存在感好低哦 感觉可以加点时长 把电影拍得深刻一点 故事是好故事 但拍得比较浅 为了妈妈打满分
没有神奇妈妈，哪来的神奇小子。无论多么艰难，也要全力以赴
超喜欢这种发生在一间屋的悬疑片，加上中式喜剧效果，整场下来观感轻松又烧脑，果然小空间最容易强调角色间的矛盾，关系表面上丝丝分明，实际错综复杂，这种种都是对演员导演编剧的一个挑战。
带有诙谐外壳的黑色幽默 剧情层层反转 全员恶人 到最后才知道谁是最坏的那个 配乐营造出了悬疑和恐怖氛围 演员也各有精彩发挥
用力哭不如用力跑！吴君如又演了一次伟大的母亲角色！
最后，很明显的不足是外卖员的人物、内心、动机挖掘都不太够，缺少人性的探讨，落入社会新闻的窠臼。至于后面正能量的强行升华，不要也罢。
除了母子情深互为精神支柱，影片也表现了冠军光环背后普通人的辛酸苦辣。强烈推荐此片！
认定目标，不放弃的精神，也在感染着我！
擦枪即可以走火，也可以走心
妈妈也可怜，一路走来真的很不容易555
这种叙事按照个人口味来说，我可能永远也看不腻，李春来越来越有自己的味了，窦骁到片尾才认出来，他会演戏也是没想到，当然我最爱的还是范大爷，这片应该和扬名立万的分数差不多啊
3.5。剧本杀式电影，随着范伟的角色进入，不知道其他人物都是做什么的，在剧情深入的过程中一点点得知。可以更high一点，但是目前也很不错，张颂文的存活是出于过审考虑的吧。窦骁糙一点的样子明显感觉更帅一点……
11.22 完全巧合，没有逻辑。别挣扎了，咱们国家真的没有靠谱的“烧脑型悬疑”编导
同名电影Knock Knock。饭桶外卖。反转再反转。贩卖儿童的人太可恨了，而且还是残疾儿童，没人性呢。我信钱，不信你。人为财死，一点没错，
每出现一个人物就倒序一次，每个人的塑造都很简单不是很丰富，看不出明显的矛盾和动机，一直在反转，还是需要废脑子的。
最后才呈现出真相。回味一下，前面埋伏了很多小细节，小线索，到后面逐一呼应。佩服！细节之处见真功。
“多吃牛肉”！“同工同酬”！
本片催泪的剧情不多，励志的剧情点到即止，更多的是单纯讲述一个真实的故事，非常值得一看。
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