Nand2Tetris is a notable educational program geared toward teaching the fundamentals of computer architecture and systems through hands-on projects. However, some users feel that it lacks certain foundational topics such as Boolean algebra methods like product of sums and Karnaugh maps, which can aid in designing digital logic more systematically. Additionally, critical subjects like finite state machines (FSMs) and state handling concepts are not thoroughly covered, leaving gaps for learners. Despite these critiques, many participants find the journey enjoyable and rewarding, especially when they pursue additional challenges or side quests beyond the core curriculum. Overall, Nand2Tetris remains highly recommended for its engaging approach to understanding these complex topics and filling knowledge gaps for various learners, including those without formal computer science backgrounds.