Unit 4 focused on water development projects such as dams and weirs (for more info on what a weir is, go here: http://en.wikipedia.org/wiki/Weir). These projects were funded by multi-national corporations to bring energy to Thailand. However, as with most projects, there is a significant give and take with power production.
For starters, the government conducted many of these projects (going back 21 yrs) without the consent or knowledge of the local community. Even if they had told them, the government had no idea the kind of effects these projects would have. The flood zones they demarcated for dam construction often turn out to be grossly inaccurate, leading to catastrophe for the local residents.
The government and its entities such as RID (Royal Irrigation Department) and EGAT (Electricity) also lied about what they were trying to do. Look at the wikipedia picture of a weir, seen here.

Now look at what the Thai government called a weir.
There's a shocking difference.
Now, the communities are left with flooding that destroys their crops, increasingly salty land due to the large salt deposits under the soil that are being leached up due to prolonged floods, loss of huge fish populations because they can't migrate upstream anymore, flooding of the wetlands (which they call their "supermarket" due to its biodiversity), among other problems.
While the numbers might show that these folks are economically better off with more energy, what it doesn't account for is the fact that before the dam they didn't need money. They had everything they needed from the river and the wetlands.
Now they have money but no food. And less and less money because their economic means of subsistence are also being stolen by large scale development.
There was a great quote in a documentary we watched with the students called "Flow." The quote said that the World Bank knows how to spend a billion dollars in one place, but doesn't know how to spend less money in millions of different places.
BUT, on a happier note, we also had the opportunity to see some of the river rituals of the Isaan (NE Thailand) people. In order to celebrate the spirits who protect the land and the river, once a year people dress up in their colorful best and sing, dance, and generally get wasted. Meh Pa, whom I stayed with, told me that the spirits like lao kao (rice whiskey), cigarettes, betel nut (crazy stuff, check it out here: http://en.wikipedia.org/wiki/Paan), and other substances so the participants in the dances will use all of these so the spirits who possess them can enjoy it as well, for a time.
I talked to a yai (grandmother) for 30 minutes in Isaan (not Thai, it is a language closer to Lao) and she explained the whole ceremony, telling me that often foreigners (farang) come here and don't understand what it going on. At least, that's all I understood. Not only is my Isaan far worse than my Thai, she was chewing betel nut (see above) and drinking, making her speech more slurred. Then my new bff handed me what I thought was tea... after a big gulp, NOPE! It was herbal lao kao. Yum, nothing like moonshine at 9:30am.
Needless to say, this was one of the most fascinating experiences of my life. Every part of it was so interesting... and confusing. Things like this hardly phase me anymore though, probably a sign of my nearly 6 months in Thailand.
Many other things happened on Unit 4, but this was my favorite memory. Oh, and Paw Somkiat (a leader within the Assembly of the Poor and Pak Mun dam protests for the past 21 yrs, see here: http://en.wikipedia.org/wiki/Assembly_of_the_Poor)
We were able to spend the morning with Paw Somkiat on his porch, talking about everything from the 21 yr struggle of Pak Mun villagers to the challenges faced by upstate South Carolina residents! We talked about Glendale, which was great.
But, my favorite moment with him was perhaps when Sam was teaching him card tricks. Something about us doing magic tricks with a man former Prime Minister Thaksin yelled at on TV.... surreal, and beautiful.
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The students return today from their very last unit (mining, mostly copper and gold), and are actually doing their last exchange as I type. It is so strange that we are already moving into final project time, and the wind-down of the semester. Sigh.
