You seem to be imagining that the bombers in WW2 had modern bombing technology. At the time, they didn't have the technology to accurately target a single building (especially at night when the raids on London were conducted). They certainly didn't have the accuracy to target something as narrow as a train track. Bombing tactics at the time consisted of dropping a huge number of bombs and hoping that a few of them got lucky and hit something valuable.
I also note that it doesn't take long to repair railroads, and repairing them quickly after enemy damage has been a focus of engineers starting with our Civil War.
A lot of WW2 happened before Americans joined the party. At the start and up until the Blitz, both sides wished to avoid civilian casualties (incredible idea). Even the Nazis wanted to just take out the RAF, docks and munitions factories. But then some bombs landing in Berlin gave Hitler the idea to start terrorising British cities, so London's docks became a target in expectation that a lot of ordnance would miss and terrorise Londoners. Whitehall was also targeted - a 'decapitation strike' in modern parlance.
Coventry was removed from the map in summer 1940, to a certain extent Churchill had been waiting for this to happen (Bletchley Park had thee intercepts) so that reprisals could begin. And so it began. Bomber command kind of gave up on 'precision' and it then became eugenics - kill off the working class people! Bomb their houses! Factories, docks, railways were no longer the targets, it really was working class housing to be terrorised.
I have not heard about Churchill's advisor - Lindemann - on any History Channel documentaries, but not everything is as it gets told. I am not seeking a contrary view, just, the more you study a subject doing one's own research the more it differs from our own rosy propaganda. I also think that what the germans did in Namibia before the war is also quite fascinating, the depths of inhumanity that we learned of after the concentration camps were discovered were plain to see a generation earlier. It is as if the germans missed out on colonies and sought to make colonies in eastern Europe to make up for missing out on the land grab that the British (Portuguese, French and Spanish) empires had managed.
As for the Buckingham Palace incident, that was a stray bomb, not one of many aimed at the palace that happened to get through.
Coventry was removed from the map in summer 1940, to a certain extent Churchill had been waiting for this to happen (Bletchley Park had thee intercepts)
R.V. Jones in Most Secret War lays out an entirely plausible account of how Coventry happened. It's important to realize that militaries hide data like exact targets behind code names to avoid various sorts of exposure, and these code names are also used on what they consider to be secure channels. Famously the Japanese attack on Midway; as Wikipedia puts it (https://en.wikipedia.org/wiki/Battle_of_Midway#Allied_code-b...):
Admiral Nimitz had one priceless advantage: U.S. cryptanalysts had partially broken the Japanese Navy's JN-25b code. Since the early spring of 1942, the US had been decoding messages stating that there would soon be an operation at objective "AF". It was not known where "AF" was, but Commander Joseph J. Rochefort and his team at Station HYPO were able to confirm that it was Midway; Captain Wilfred Holmes devised a ruse of telling the base at Midway (by secure undersea cable) to broadcast an uncoded radio message stating that Midway's water purification system had broken down. Within 24 hours, the code breakers picked up a Japanese message that "AF was short on water."
Since 1996 the Ultra decrypts for the relevant period have been available in the UK National Archives. Between 07:35 GMT on Sunday 10 November 1940 and 05:00 on Monday 11 November a German signal was deciphered and given the serial number CX/JQ/444, paragraph 4. This message set out code words to be used by aircraft on an operation named "Mondschein Sonate" but did not give Coventry as the target or a date. It did say that transmission of a figure 9 would denote "KORN" and hindsight has recognised this as the code name for Coventry. This was not realised at the time however, even though PAULA had been identified as Paris and LOGE as London. Indeed, the word KORN was used in two reports from an aircraft taking part in a raid on Southampton on 30 November, two weeks after the Coventry Blitz. Another decrypt on 11 November or early on 12 November gave navigational beam settings for Wolverhampton, Birmingham, and Coventry but no dates. There was a hiatus in Ultra decrypts from 01:15 GMT on 13 November until 02:40 on 15 November, by which time the raid was well underway: Churchill could not have received new Ultra intelligence on the afternoon or evening of the attack because there was none to give him. Intelligence from captured airmen and documents did not offer an unambiguous picture either.
Back to you:
As for the Buckingham Palace incident, that was a stray bomb, not one of many aimed at the palace that happened to get through.
During the Blitz, Buckingham Palace and its grounds were struck on sixteen separate occasions (of which nine were direct hits). The Palace forecourt, inner quadrangle and South and North Wings were all marred by high explosive and delayed-action bombs.
According to it, the famous bombing I mentioned was deliberate targeting during daylight:
A single German raider specifically targeted the Palace with a stick of five high explosive bombs. Two of these hit the inner quadrangle, a third struck the Royal Chapel in the South Wing and the remaining two (one delayed-action) fell on the forecourt and on the roadway between the Palace gates and the Victoria Memorial. The explosions in the quadrangle ruptured a water main and blew out most of the windows on the southern and western sides. The interior of the Royal Chapel was lacerated. Four workers were injured; one later died....
