--- title: "Ferdus Rhaman Khan (@ferdus615) | Hashnode" description: "An learner for life! Read the latest articles by Ferdus Rhaman Khan on Hashnode." url: "https://hashnode.com/@ferdus615" --- @ferdus615 # Ferdus Rhaman Khan @ferdus615 · Dhaka, Bangladesh · Joined November 2025 An learner for life! ### [Why AI Is Talking Like a Caveman: The Viral Tool Saving Millions of Tokens](https://ferdus615.hashnode.dev/why-ai-is-talking-like-a-caveman-the-viral-tool-saving-millions-of-tokens?utm_source=hashnode&utm_medium=feed) Discover Caveman, the viral tool for Claude Code that slashes token costs by 87%. Learn how "less word" actually makes AI smarter and faster. 4 min read · [ferdus615.hashnode.dev](https://ferdus615.hashnode.dev/why-ai-is-talking-like-a-caveman-the-viral-tool-saving-millions-of-tokens?utm_source=hashnode&utm_medium=feed) [Apr 11](https://hashnode.com/posts/why-ai-is-talking-like-a-caveman-the-viral-tool-saving-millions-of-tokens/69da1054c8e5007ddb7f8b43) ### [LinkedIn’s "BrowserGate" Scandal: Surveillance, Regulatory Evasion, and Your Privacy](https://ferdus615.hashnode.dev/linkedin-privacy-surveillance-scandal?utm_source=hashnode&utm_medium=feed) LinkedIn “BrowserGate” scandal exposes alleged covert device scanning, data harvesting, and privacy violations affecting millions of users worldwide. 6 min read · [ferdus615.hashnode.dev](https://ferdus615.hashnode.dev/linkedin-privacy-surveillance-scandal?utm_source=hashnode&utm_medium=feed) [Apr 6](https://hashnode.com/posts/linkedin-privacy-surveillance-scandal/69d3f8ee40c9cabf44690983) ### [Time and Space Complexities in Simple Way!](https://ferdus615.hashnode.dev/time-and-space-complexities-in-simple-way?utm_source=hashnode&utm_medium=feed) This article explore time & space complexity in computer scinece in a very simple and beginner friendly manner. 11 min read · [ferdus615.hashnode.dev](https://ferdus615.hashnode.dev/time-and-space-complexities-in-simple-way?utm_source=hashnode&utm_medium=feed) [Nov 29, 2025](https://hashnode.com/posts/time-and-space-complexities-in-simple-way/692b6bc935bac505b45bf602)