I only have layman interests in languages. I don't particularly want to read some wikipedia article on languages.
As do I, though I have taken a few linguistic courses as well. In any case, 'layman interests' is exactly what Wikipedia is for. I sent you to the specific section of the page which answers your question, unlike your relativity example which is the top level page of something I did not express any interest in (to you). If you don't care enough to read the Wikipedia article, being that you're an AC, I'm not sure you're worth answering anyway.
If you must know *why* I think it is that great, The part I linked to is where it explains that the design of the letters is based on the position of the mouth when making the sound. The other reason it is that there's only a handful of "letters" but they group together to form blocks. Each block makes a complete syllable (so that it flows naturally when reading) but unlike other phonetic alphabets such as Kana, you do not need to memorize every possible block to learn to read / write, just the component letters and the positioning cues.