The primary reason for this is the "noble silence" that's observed during the course. Students avoid communicating with each other, both verbally and non-verbally, for the first 9 days of the 10-day experience. This is, in a sense, another form of sensory deprivation. When your mind "turns off" the part that pays attention to what's going on for the purpose of figuring out what to say and how to respond, it changes the way you think and what you're capable of achieving during meditation.
So yes, the technique can be used outside of the 10-day courses, but it's a very different experience from what you get in the 10-day course. Personally, attending these 10-day courses has been very beneficial to me. But I stop short of recommending them to anyone who isn't sure they want to attend. It's one of the hardest things I've ever done. Sitting 10+ hours per day can be exhausting, both physically and mentally. And many people aren't equipped to essentially be alone with only their thoughts to keep them company for that amount of time. But if all that doesn't scare you off, there's nothing else that should and it can be a life-changing experience.
Some people like the company of others and a sort of schedule to keep. It motivates them. They go for the retreat. But I have seen them come back with absolutely no change. They still go back to their old ways, of talking shit about others, smoking, drinking, and they don't practice meditation anymore. This is just bad attitude towards Vipassana.
To be honest, I was introduced to Vipassana (and Yoga), when I was in rehab. 15 days of early morning meditation and Yoga helped me a lot. That got my interest going and I decided to buy self-help books and keep practicing.
https://en.wikipedia.org/wiki/Vipassanā#Vipassan.C4.81_medit...
And to be honest its not the real stuff. What are 10 days? You are going to learn absolutely nothing. Mediation is a 24 hours a day practice. And it takes a lot of time to just get used to it.
For example, in one form they only tell you to focus your mind on an object (like breathing, or your abdomen). In Vipassna, the idea is focus first, but the next step is to observe your thoughts (mindfullness). Observe, never reject, whatever it is. Happiness, Lust, Greediness, Anxiety. Observe, and let it go. The mind is a crazy machine. More precisely, our chattering monkey mind.
Please read this book if you haven't already. I can't recommend it enough. It has changed my life.
Mindfulness in Plain English - Bhante Henepola Gunaratana
I'm sure that you can be objective and cut through that type of statement but meh, I couldn't do it. Maybe I'll try again at some point but that one really put me off.
Although spiritual experiences can occur if you think of them as hallucinations due to the state intense meditation can get one into.
I never realized that. Thank you!
I've been looking for a good getting started guide to meditation. The book seems like a great resource. I will definitely read it.
Also, did you complete the full 10 days? I've been thinking of doing this for some time, read a lot about it but there's a mental block stopping me.