incertia - Blog

Fraudulent Educational Streamers

2026-07-18T00:00:00+00:00

Introduction
Background </a> </h2>
Kureiji Ollie</a>. It is directly quoted in the wiki</a> that</p>

She has hosted math streams in which she discussed university-level topics such as polynomial division, differential equations, and proving that
Somewhat surprisingly, Indonesia's standard math curriculum is about as backwards as the USA's, but perhaps the only truly university level topics would be derivatives (not differential equations), and the proof that
While I think it is admirable that she is bringing attention to mathematics to the general population, I don't think the entire act of putting these accomplishments (mostly equivalent to having a basic education in any country) on a pedestal is correct. Regardless, I don't actually have any problems with Ollie herself, and the fraud is limited to the fraudulent elevation by her audience. It just serves as some random starting point for my rant.</p>
The Present Past
point line distance formula</a> yields</p>

so our final answer is just its square,
This time, although streamer is bringing attention to mathematics, I am very displeased with their methods. The sort of fraudulent behavior where you insist your methods are superior and insist on remaining uneducated is not the look I think educational streamers should mold themselves after.</p>
Present Day
The setting is LeetCode 1089: Duplicate Zeros</a>. Your goal is as follows. Given an array of integers, for every 0</code> you encounter left to right, modify the array by inserting another 0</code> and shifting everything over to the right, while keeping the array size fixed. i.e. [1, 0, 2, 0, 3, 4, 5] -> [1, 0, 0, 2, 0, 0, 3]</code> and [1, 0, 2] -> [1, 0, 0]</code>. The goal is to perform this transformation in-place. Streamer says they want to start off with the naive forwards approach. That sounds perfectly reasonable. Then we get the first red flag. Their algorithm, which is summarized by shift all remaining elements then write</em>, runs in`going through an array backwards</em>. This starts setting off every alarm bell possible in my head.</p>`
Fast forward a couple of weeks, and they try to implement a singly linked list interface, but as a challenge from their usual language, TypeScript</a>, they decide to do so in C</a>. This is perhaps the most damning evidence. During the implementation process, we learn that in their ten years of programming, they have never heard of the term heap allocation</em> nor the function malloc</em>. Now that, is incredibly surprising, as being in the industry for ten years means they graduated university around 2015-2016. I guess React</a> did start getting super popular back then but supposedly if you studied coding at all in any university during that time period you would have been exposed to at least one of C</a> or C++</a> and at least heard of manual memory management, right? We can also spy on their initial stream, where streamer struggles to distinguish the behaviors of ++i</code> and i++</code> in native TypeScript. It also takes them a minute to recall how [...Array(n)].map</code> iterates over its indices.</p>
`Overall, this has the makings of someone who understands TypeScript code but has not spent any significant amount of time doing any sort of algorithms. I guess 10 years of programming is technically correct but my guess is that it is more specifically 10 years of UI component programming, and they are completely new to any sort of standard computer science knowledge or algorithm type programming at all.</p>`
`Were my expectations too high? The vibe definitely feels more like the streams titled "grinding leetcode", "leetcode practice", or "learning ts by doing leetcode", and not "streamer teaches you typescript". What really threw me over the edge was theirOffKai</a> handout resembling a midterm and one of the questions was to evaluate a JSFuck</a> expression, which nobody in their right mind would do. I'm going to be completely honest. I don't think this stream has any capability of teaching besides the viewer learning alongside the streamer, and that goes completely against what I think the stream is trying to present itself as.</p>`
Conclusion</a> </h1> In the end, this is just me ranting about what I observe as "the current state of online education content". Of course, there are always better resources, and I don't exactly have any power to police streams, but the overall direction of everything just feels wrong to me. There are more and more AI slop videos re-explaining the same topics over and over again. Actually good educational content is still coming mostly in the form of YouTube</a> videos but those are few and far between. How does all this relate to the literacy crisis</a> as education becomes more and more online? Is this just a stepping stone towards the ideal state or are we slipping off of an unstable equilibrium? Who knows? What I know for certain is that I am not a fan of the current state of things.</p>

Initial Post 2026-07-10T00:00:00+00:00 Welcome</a> </h1> I guess this is the official welcome to the new blog. The font is URW Classico</a>, which is a free alternative to TeX Gyre Pagella</a> in a sans serif style. Research has shown that sans-serif styles are easier to read than than serif styles, although I still heavily prefer using serif for math printouts. Hopefully I am able to adjust to sans-serif without too much difficulty.</p> Motivation</a> </h1> They say that writing is good for the soul, and I might as well put any mathematical/cryptography ramblings on the internet for public consumption. Hopefully I do not make too many mistakes, as that would be slightly embarassing.</p> Math</a> </h1> Speaking of math, hopefully your browser is able to display mathematics. I will be using two types. Inline mathematics, much like the name, is displayed inline, such as: Let $\mathds{N} = \mathds{Z}_{0}^+$ denote the set of natural numbers. Display math, on the other hand, should be centered. For example, here is Hölder's inequality:</p> \[ \left(\sum_{i = 1}^n a_i\right)^p \left(\sum_{i = 1}^n b_i\right)^q \geq \left(\sum_{i = 1}^n \sqrt[p + q]{a_i^p b_i^q}\right)^{p + q}. \]</p> Since the source file is in markdown, I must be careful as the writer to write \\[</code> and \\]</code> so that the backslash is properly escaped into the rendered HTML, but that is not a huge deal.</p> We can also prerender SVG files to display them.</p> With some Zola shortcode magic which is soon to be unsupported once CF pages upgrades to 0.23, we are able to inline our SVG with currentColor</code> paths, so any default black text is automatically converted to our theme's text color, which is cool. There should be a dark/light toggle somewhere on the page. Try it out!</p> We can also try to prerender SVG files for inline math. Let It is probably up to my sanity whether or not future posts will use MathJax or full inline SVGs, but it may be the case where the initial post is written with MathJax and the final product is converted into inline SVG to ensure the font issue discussed in the next paragraph does not manifest.</p> We set up the math to use TeX Gyre Pagella</a> fonts though, so that they have slightly more visual impact. The blackboard font is from the dsfont</a> set, which unfortunately bolds the wrong side of the blackboard double stroke compared to pazo</a>, so you may catch these inconsistencies when moving between MathJax</a> and pre-rendered SVGs. In fact, they are on full display two paragraphs ago! Additionally, pazo</a> and px</a> blackboard fonts look very similar, but px</a>'s Z</code> is left bolded while the rest of the characters are right bolded. The Y</code> also looks a bit odd to me, so we use pazo</a> instead.</p> About</a> </h1> This new site should also contain an about me</a> page, which should consist of a short bio and some other reference links.</p>

incertia - Blog

Fraudulent Educational Streamers

Present Day</a> </h2> We are now going to veer off topic into the land of programming and computer science, and present what I consider to be the most egregious example. Enter a new streamer, whose qualifications are as follows:</p> Occupation: Programmer</li> Years of experience: 10</li>

Initial Post

About</a> </h1> This new site should also contain an about me</a> page, which should consist of a short bio and some other reference links.</p>

`About</a> </h1> This new site should also contain an about me</a> page, which should consist of a short bio and some other reference links.</p>`