Actually, the soviets used a normal ball point, the US tried using a pencil but they discovered the graphite particles got into everything, including the electrics and instruments. Thing is, a ball point doesn't actually need gravity, it's just that when you hold it AGAINST gravity it won't work.
Another Myth, see.
As regards Russian tanks, it's difficult to say - a high-tech tank that works most of the time (i.e. outside combat) is a good deterrent, but that doesn't mean the Russians can make hundreds of them that will work reliable for, say, 100 hours of combat use.
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