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As I sat in my RV, sipping coffee and staring at lines of code, I couldn't help but think of Alan Turing. The father of computer science, Turing's work on the theoretical foundations of modern computer science is still widely influential today. I've always been fascinated by the story of how he cracked the Enigma code, and how that achievement played a significant role in the Allied victory in World War II. This got me thinking about the balance between human intuition and machine automation in our work as developers. One particular challenge I faced while building Tab Reminder, a Chrome extension that allows users to schedule tabs to reopen later, was finding the right balance between automation and user input. From a technical standpoint, implementing the scheduling feature required a deep dive into Chrome's extension APIs, particularly the alarms API. I had to ensure that the extension could reliably store and retrieve scheduled tabs, even when the user closed their browser or restarted their computer. The key insight here was using the alarms API to trigger a background script that would reopen the scheduled tabs at the specified time. One lesson I learned from this experience is that while automation can greatly simplify many tasks, there are still areas where human judgment and oversight are essential. For instance, when a user schedules a tab to reopen, they may have specific intentions or context in mind that the machine can't fully understand. By providing a simple, intuitive interface for scheduling tabs, Tab Reminder fills a gap that more automated solutions might overlook. You can try it out for yourself at https://go.sg1-labs.us/tab-reminder . As developers, we must recognize the limitations of automation and ensure that our tools and applications are designed to augment, rather than replace, human capabilities.

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By some benchmarks, Julia code can run 10X to 1,000X faster than Python—but there’s a reason it’s not a very popular programming language.

Nearly three years ago, I showed you an awesome $8 cable tester that quickly tells you if your USB-C cable is likely fast, slow, powerful, or weak. Sadly, that gadget got discontinued, and I've never found anything as intuitive or inexpensive since. But if you've got a Mac with Apple Silicon chips, you can simply […]

In the previous article , we learned that an Origin consists of three components: Scheme (Protocol) Host Port Browsers use these three components to determine whether a request is Same-Origin or Cross-Origin . Whenever a web page attempts to access resources from a different Origin, a security mechanism called CORS (Cross-Origin Resource Sharing) comes into play. 📌 Why Does a CORS Error Occur? Suppose your web application is running at: https://app.example.com Now it tries to fetch data from: https://api.example.com Although both URLs belong to example.com , their Hosts are different. That means they have different Origins. As a result, the browser treats this as a Cross-Origin request. If the destination server does not explicitly allow this Origin, the browser prevents JavaScript from accessing the response, resulting in what we commonly call a CORS Error . 💡 Important: CORS is a browser security mechanism , not a server security mechanism. ⚠️ A Common Misconception About CORS Many developers believe that a CORS error means the request never reached the server. In most cases, that's simply not true. Typically: ✅ The browser sends the request. ✅ The server receives it. ✅ The server generates and returns a response. ❌ The browser blocks JavaScript from accessing that response. In other words, the request was successful—the browser simply refuses to expose the response to your application because the CORS policy was not satisfied. This is why sending the exact same request using tools like Postman or curl usually works without any problems. Those tools are not browsers, so they do not enforce browser security policies like CORS. 📦 How Does the Server Handle CORS? To allow JavaScript to access the response, the server must include the appropriate CORS headers. The most important one is: Access-Control-Allow-Origin: https://app.example.com This header tells the browser that JavaScript running on https://app.example.com is allowed to read the response. ✅ Examples Suppos

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