csen2025.org https://validator.w3.org/feed/docs/rss2.html Provenance Matters More Than Volume Published Code Gets Checked, Which Is the Point Test Twenty Hypotheses and One Will Look Significant Statistically Detectable and Practically Useless Coexist Easily A P Value Does Not Tell You the Probability You Are Right A Weak Baseline Makes Any Method Look Strong Every Flag Is a Branch in Production You Must Test Deploying Often Makes Each Deploy Boring Validating the Same Input Five Times Hides Where It Should Happen Both Work, Mixing Them Does Not Errors Are Values, Not Interruptions Deprecate Loudly and Remove Slowly Low Coupling Is What Makes Change Cheap A Function That Needs a Section Header Wants to Be Two Functions Clusters of Any Shape, Plus a Category for Noise A Tree of Clusters You Cut Wherever You Like K Means Needs You to Know K Before You Start No Training at All, and a Very Expensive Prediction Comparing Points in a Space You Never Actually Build Two Implementations of the Same Idea With Different Priorities Each Tree Fixes What the Last One Got Wrong Predicting Probability, Not Category High Cardinality Breaks One Hot Encoding Quietly Underfitting and Overfitting Are the Same Dial Five Estimates Beat One Lucky Split Making the Model Worse on Purpose So It Generalises Reading a File by Pretending It Is Memory Crossing Into the Kernel Is Not Free Switching Threads Throws Away a Warm Cache A Cache for the Cache of Where Memory Lives Turning a Two Dimensional Problem Into an Ordered List The Algorithm Behind Every Diff You Have Ever Read Measuring How Far Apart Two Strings Really Are Every Substring of a Text, Indexed Once Open Addressing and Chaining Fail in Different Ways Sorting Faster Than Comparison by Refusing to Compare A Bad Pivot Turns Quicksort Into Bubble Sort Quicksort Is Fastest Until the Input Is Already Sorted Slower on Purpose, Because It Checks Every Edge Again The Cross Product Answers Which Side of a Line You Are on An Exchange Argument Is the Only Honest Proof Distance Costs More in Coordination Than in Time Zones Greedy Works Until Somebody Constructs the Counterexample Same Answer, Different Memory Profile Recursion With a Notebook Is Dynamic Programming Privacy Policy Terms and Conditions Contact Us About Us Without a Nonlinearity the Whole Network Collapses to One Layer