 I spent today considering one tangible thing : whether to destroy New York in 4 @.@ 12 . That would be fun , wouldn 't it ? The idea came from the fact that all the Doctor 's companions are found in England . I 've a chance to expand on that , create a bigger world . [ ... ] But destroying New York has its problems : it leaves heavy repercussions for the rest of Doctor Who history , because there 's no reset button . I worry about that . Series Five is bound to have episodes set on modern @-@ day Earth – and that might be hard to establish , because it 'd be a very wounded world . [ ... ] These emails do influence things , definitely , because I 'm thinking , no , destroying New York is a bad choice . 
