> It would only be feasible to build on top of existing libraries, which is the whole point here. I don't think you've made a single point that substantiates t

> It would only be feasible to build on top of existing libraries, which is the whole point here. I don't think you've made a single point that substantiates that claim and neither has anyone else, really. The person you're arguing with has built (as per their own estimation) more from scratch when it comes to the actual search engine core than anything else in their own project (https://marginalia.nu/ https://marginalia.nu/). Honestly, it seems more like the people arguing a search engine is somehow "off limits" from scratch are doing so because they imagine it's less feasible, probably because they simply don't know or are in general pretty bad at implementing things from scratch, period. To a large degree there is also a wide difference in actual project scope. Remember that we are comparing this to implementing Space Invaders, one of the simplest games you can make, and one that is doable in an evening even if you write your own renderer. To talk about "webscale" (a term that is so deliciously dissonant with most of the web world which runs at a scale several 100 times slower and less efficient than things should be) is like suddenly talking about implementing deferred shading for the Space Invaders game. Even if this was something you'd want to explore later, it's just not something you're doing right now because this is something you're using to learn as you go.