Problem: Alan Dershowitz described Sudan as an example of a government that "actually deserve(s)" the appellation "apartheid." Former Canadian Minister of Justice Irwin Cotler echoed the accusation.
Who argeed with Dershowitz?
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Answer: Irwin Cotler


Problem: The hole walls for boards with two or more layers can be made conductive and then electroplated with copper to form plated-through holes.  These holes electrically connect the conducting layers of the PCB. For multi-layer boards, those with three layers or more, drilling typically produces a smear of the high temperature decomposition products of bonding agent in the laminate system. Before the holes can be plated through, this smear must be removed by a chemical de-smear process, or by plasma-etch. The de-smear process ensures that a good connection is made to the copper layers when the hole is plated through. On high reliability boards a process called etch-back is performed chemically with a potassium permanganate based etchant or plasma. The etch-back removes resin and the glass fibers so that the copper layers extend into the hole and as the hole is plated become integral with the deposited copper.
What's the minimum number of layers a PCB can have to be considered "multi-layer"?
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Answer: three


Problem: Materialism is a form of philosophical monism which holds that matter is the fundamental substance in nature, and that all phenomena, including mental phenomena and consciousness, are identical with material interactions.
Mental phenomena and what else are not identical with material interactions?
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Answer:
unanswerable