There are strict limits to how efficiently heat can be converted into work in a cyclic process, e.g. in a heat engine, as described by Carnot's theorem and the second law of thermodynamics. However, some energy transformations can be quite efficient. The direction of transformations in energy (what kind of energy is transformed to what other kind) is often determined by entropy (equal energy spread among all available degrees of freedom) considerations. In practice all energy transformations are permitted on a small scale, but certain larger transformations are not permitted because it is statistically unlikely that energy or matter will randomly move into more concentrated forms or smaller spaces.
Why are certain larger transformations not permitted?
because it is statistically unlikely that energy or matter will randomly move into more concentrated forms or smaller spaces

On February 7, 1987, dozens of political prisoners were freed in the first group release since Khrushchev's "thaw" in the mid-1950s. On May 6, 1987, Pamyat, a Russian nationalist group, held an unsanctioned demonstration in Moscow. The authorities did not break up the demonstration and even kept traffic out of the demonstrators' way while they marched to an impromptu meeting with Boris Yeltsin, head of the Moscow Communist Party and at the time one of Gorbachev's closest allies. On July 25, 1987, 300 Crimean Tatars staged a noisy demonstration near the Kremlin Wall for several hours, calling for the right to return to their homeland, from which they were deported in 1944; police and soldiers merely looked on.
Who demonstrated close to the Kremlin in July of 1978?
Crimean Tatars

ADSL-broadband service is provided with maximum speeds of up to 1536 KBit/s downstream and 512 KBit/s upstream offered on contract levels from lite 16 per month to gold+ at 190 per month. There are a few public WiFi hotspots in Jamestown, which are also being operated by SURE (formerly Cable & Wireless).
What is the maximum speed of the broadband service?
1536 KBit/s downstream and 512 KBit/s upstream