Very interesting video, thank you! I’m going to answer with a long post.
Flashcards don’t do it for me as well, and I experimented with SRS even before SRS software came along. There were word lists, handwritten paper cards, then desktop software, then mobile apps… It never worked for me. During my repeated attempts to learn German over the years, I used SRS to build core vocabulary, but my level of retention was always horrible, and the whole process was boring, stressful and discouraging (at some point I really believed that there was something horribly wrong with my memory!). Now I’m learning Italian using native content here on LingQ and elsewhere, and after eight months I’m still amazed at the ease and speed of my vocabulary growth.
Here’s the thing: we know that the brain learns by spaced repetition, it’s pretty much been proven. But there is “natural” spaced repetition, and then there are systems and tools that deliberately take the key elements and build them up as a technology. There are two key elements in spaced repetition, and they are both equally essential:
- repetition: you encounter some information over and over again
- variability: you encounter this information in different contexts
Now, software systems do the first part very well: they make you repeat things. It’s the second part that they have problem with. What kind of variability can a flashcard app provide? Some external variability, yes: you can review your cards at different times, in different locations (yes, this helps too, it’s been shown in research), or on different devices. But that’s about it. After all, they are just flashcards on a screen. The internal variability is missing. You don’t encounter different meanings, or shades of meaning, or different emotions or concepts. You don’t encounter other pieces of information that could change your perception and add new associations and images.
I think it’s a feature of our technologically oriented culture that every time we discover something about how our brains work, we immediately want to distill the key elements and “technologize” them. And we tend to think that the result should be faster and more efficient than “natural” conditions, but this is not always the case.
Of course, there is nothing wrong with using flashcards if they work for you! It’s just important not to present them as the only method to learn vocabulary, because clearly there are people for whom they don’t work.
Actually, I think this could be a very interesting research topic. Maybe everyone needs some individual mixture of repetition and variability? It could be that those for whom the flashcards work need less variability and more repetition, and vice versa. Or maybe those for whom they work can compensate by “inserting” some variability - by making their own cards, or using images, or mnemonics? Personally, I’d love to know the answers - maybe some day some researcher will pick up this topic!