, and it would stay there until you updated it manually. Then came web 2.0, which introduced dynamic and interactive websites. Users could contribute content, comment, and interact with each other. Social media platforms like Facebook and Twitter are examples of this era.
Web 3.0, often referred to as the "semantic web" or "decentralized web," is the next phase. It envisions a more intelligent and decentralized internet, where data is connected in more meaningful ways and controlled by individuals rather than centralized entities. Technologies like blockchain and decentralized applications (DApps) play a significant role in this concept.
In simpler terms, web 3.0 aims to create a smarter and more user-centric internet, where users have more control over their data and interactions. It's still evolving, and its full potential is yet to be realized.
1. The speaker is Professor David Malen, a computer science teacher at Harvard. He is answering questions from Twitter about computer science topics. [Source: Document(page_content="00:00:00.00: hello world my name is Professor David J\n00:00:02.28: malen I teach computer science at\n00:00:03.90: Harvard and I'm here today to answer\n00:00:05.34: your questions from Twitter this is\n00:00:07.38: computer science support\n00:00:09.11: [Music]\n00:00:12.78: first up from Tad proletarian how do\n00:00:15.42: search engines work so fast well the\n00:00:17.52: short answer really is distributed\n00:00:19.62: computing which is to say that Google\n00:00:21.84: and Bing and other such search engines\n00:00:24.06: they don't just have one server and they\n00:00:25.62: don't even have just one really big\n00:00:27.00: server rather they have hundreds\n00:00:28.98: thousands probably hundreds of thousands\n00:00:31.26: or more servers nowadays around the\n00:00:33.48: world and so when you and I go in O2\n00:00:35.76: Google or Bing and maybe type in a word\n00:00:37.68: to search for like cat it's quite\n00:00:40.02: possible that when you hit enter and\n00:00:42.06: that keyword like cats is sent over the\n00:00:44.52: internet to Google or to Bing it's\n00:00:46.68: actually spread out ultimately across\n00:00:48.48: multiple servers some of which are\n00:00:50.04: grabbing the first 10 results some of\n00:00:51.66: which are grabbing the next 10 results\n00:00:52.98: the next 10 results so that you see just\n00:00:55.20: one collection of results but a lot of\n00:00:57.30: those ideas a lot of those search\n00:00:58.62: results came from different places and\n00:01:00.72: this eliminates what could potentially\n00:01:02.04: be a bottleneck of sorts if all of the\n00:01:04.62: information you needed had to come from\n00:01:06.12: one specific server that might very well\n00:01:08.16: be busy when you have that question Nick\n00:01:10.80: asks will computer programming jobs to\n00:01:13.08: be taken over by AI within the next five\n00:01:15.36: to ten years this is such a frequently\n00:01:17.16: Asked question nowadays and I don't\n00:01:18.60: think the answer will be yes and I think\n00:01:20.76: we've seen evidence of this already in\n00:01:22.56: that early on when people were creating\n00:01:24.06: websites they were literally writing out\n00:01:25.86: code in a language called HTML by hand\n00:01:28.08: but then of course software came along\n00:01: