Have you ever been to the DRC? Its former colonial master plays almost no role in Congolese society. Belgium made little effort to spread its culture to its colony, rather like the Dutch in Indonesia. Then, after independence, most of the population became isolated from the outside world as central government and education broke down, and the main impact on the country’s politics from outside came from larger, stronger powers than Belgium was.
If the "normal" rate of lung cancer is X, the observed rate in nonsmokers who get secondhand smoke is X+Y, and the observed rate in smokers is X+Y+Z, if you compare nonsmokers and smokers it looks like smoking increases your rate by Z when it's actually Y+Z.
In reality, CAD systems don't provide data structures that let you describe the behaviour of materials, I feel this sends a hint to designers that they don't need to consider those aspects. I did build this into STEP from the start but CAD vendors and users didn't want to implement it, am currently trying to fix this.
When we use computers for everything, the functionality provided by particular software packages can end up constraining how we think about a problem space.
There have been some V4L2 enhancements to support hardware video decoding pending a merge for a long time, they do seem to be in the mainline kernel now, I guess people didn't want to wait that long.
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