Krashen's Theory

I read the article and once again had the thought- "It's amazing we can acquire other languages and become proficient with them at all! It's such a complex idea/process!" (This was prior to watching the video, and after I had scribbled notes on all various filters, systems, and learning processes in the article.)After watching Krashen's video and his demonstration, I let out a little sigh of relief seeing that language acquisition is possible and "manageable" through the use of comprehensible input. I really appreciated his comment that we can only acquire language when it is understandable to us, and the fact that research supports this, and not memorizing rules, vocabulary, rote memorization, etc. was good to hear as well.