I just change the 1 inch pipe to 25.4mm pipe instantly, is it a magic?
It depends how old the pipe is. An 70 year old British pipe would have to grow by 46nm, while a similar aged US pipe would have to shrink by 51nm. And if it was 2 or 3 hundred years old, and from Scotland, France or Netherlands, it would even be outside the normal tolerance one might expect for such a pipe.
You do realise that Thailand may have developed over the past decades, and that North-East Thailand may not be representative of the rest of the country, don't you?
Personally I think you're more likely to pick up diseases eating in "clean" hotels and chain restaurants staffed by poorly trained teenagers than a roadside stall run by an elderly couple whose livelihoods have depended on not poisoning their customers for decades. If you're spending a year in a country, you're going to have to get used to the local germs anyway, so take the plunge and live life.
is 300 mm^2 which is about 17.33 sq mm
Is the compression non-lossy?
Actually the problem with 3G is not the size of the module at all, but the fact that 3G drains the battery very fast, and the costs from the providers are vastly higher compared to other technologies.
3G doesn't drain the battery any faster than any other technology. If you're comparing with 2G, then yes a 3G module working at full data rate will drain a battery quicker than GPRS at full data rate, but if you have a constant amount of data available, the 3G will finish sending it much quicker, so its overall consumption will be lower. And idle consumption is lower for 3G than 2G. LTE may be better still, but outside major city centres and away from highways there are few places where you will find coverage.
As for cost from providers, that may be a problem you have with your provider, but it is not universal. In most parts of the world, data is charged the same, no matter what technology it is going over.
And pregnancy — and subsequent child-rearing — do cost women professionally. Not because anybody is "sexist", but simply because you can not give a promising assignment to an employee, who just is not there (because she is on maternity leave).
The problem is this all too often extends into not giving women promising assignments because she just got married and might start making babies soon, or because she is about the age that society expects her to want to do that. That is why even in superficially equal societies such as we have in the West, women are still far from equal.
Gee, Toto, I don't think we're in Kansas anymore.