How are you, hacker? How are you, hacker? 🪐 What’s happening in tech today, November 2, 2025? The
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          On this day,
          
            The Canadian Broadcasting Corporation Was Established in 1938,  The BBC Television Services Was Started in 1936,  New Zealand Adopted a National Standard Time in 1868, 
          
          and  we present you with these top quality stories. 
          
            From 
        Weekly AI Startup Funding: October 12-19, 2025
       to 
        The Limits of LLM-Generated Unit Tests,
       let’s dive right in. HackerNoon Newsletter homepage On this day, The Canadian Broadcasting Corporation Was Established The BBC Television Services Was Started New Zealand Adopted a National Standard Time Weekly AI Startup Funding: October 12-19, 2025 Weekly AI Startup Funding: October 12-19, 2025 The Limits of LLM-Generated Unit Tests The Limits of LLM-Generated Unit Tests System Design in a Nutshell System Design in a Nutshell By @amanila [ 59 Min read ] Know system design fundamentals: UX components, databases, scaling strategies, security  compliance. Essential guide for developers  system design interviews. Read More. @amanila Read More. Why Traditional Testing Breaks Down with AI Why Traditional Testing Breaks Down with AI By @mend [ 4 Min read ] Traditional testing breaks with AI. Learn how red teaming and AI-powered fuzzing uncover hidden weaknesses in large language models. Read More. @mend Read More. Can Currencies Be Both Stable and Unlimited? I Built One That Says Yes Can Currencies Be Both Stable and Unlimited? I Built One That Says Yes By @chris127 [ 3 Min read ] Every economist says you cant have stable + unlimited currency. I built one with water price calibration. It could solve UBI, climate funding, and immigration. Read More. @chris127 Read More. The Limits of LLM-Generated Unit Tests The Limits of LLM-Generated Unit Tests By @khramov [ 10 Min read ] LLMs can generate unit tests, but do they truly validate code behaviour? This article explores Codex experiments revealing their real limits and pitfalls. Read More. @khramov Read More. Weekly AI Startup Funding: October 12-19, 2025 Weekly AI Startup Funding: October 12-19, 2025 By @aifundingtracker [ 9 Min read ] AI startups raised over $2.4 billion this week across enterprise infrastructure, healthcare innovation, and fintech.  Read More. @aifundingtracker Read More. AWS Outage 2025: What Really Happened on October 20 and What It Teaches Us About the Cloud AWS Outage 2025: What Really Happened on October 20 and What It Teaches Us About the Cloud By @mayukhsuri [ 3 Min read ] AWS outage on Oct 20, 2025, disrupted major apps worldwide. Learn what caused it, how it spread, and key lessons to build stronger cloud systems. Read More. @mayukhsuri Read More. Tool Calling for Local AI Agents in C# Tool Calling for Local AI Agents in C# By @lcarrere [ 12 Min read ] LM-Kit .NET SDK now supports tool calling for building AI agents in C#.  Read More. @lcarrere Read More. The Complete Guide to Mega Productivity With  Perplexity Comet (100 Shortcuts + 40 Prompts) The Complete Guide to Mega Productivity With  Perplexity Comet (100 Shortcuts + 40 Prompts) By @sidsaladi [ 19 Min read ] Perplexity’s Comet browser changed how I work—AI-powered, distraction-free, and built for productivity, not ad clicks. Read More. @sidsaladi Read More. 🧑‍💻 What happened in your world this week? It's been said that
          writing can help consolidate technical knowledge,
          establish credibility,
           and contribute to emerging community standards.
          Feeling stuck? We got you covered ⬇️⬇️⬇️ writing can help consolidate technical knowledge establish credibility and contribute to emerging community standards ANSWER THESE GREATEST INTERVIEW QUESTIONS OF ALL TIME ANSWER THESE GREATEST INTERVIEW QUESTIONS OF ALL TIME We hope you enjoy this worth of free reading material. Feel free to forward this email to a nerdy friend who'll love you for it.See you on Planet Internet! With love, 
 The HackerNoon Team ✌️

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The HackerNoon Newsletter: System Design in a Nutshell (11/2/2025)

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