Look at the start of the trading day and we will take a look at wall street. Also in the programme, many of us believe we have an idea for a hit novel inside us. Well well meet the man who could help you realise your dream with an algorithm that he says will help spot the next publishing sensation. And as facebook launches a messenger app for children under the age of 13, we want to know how young is too young for social media 7 let us know. Just use the hashtag bbcbizlive. Hello and welcome to business live. Talks between the eu and the uk were derailed in the last 2a hours, just as it looked like a deal might finally be on the table. The negotiations came to a halt after the dup, the Political Party in Northern Ireland who are propping up the conservative government, rejected a proposal to avoid a hard border between Northern Ireland and the republic. The dup objected to a clause in a Draft Agreement with the eu that would guarantee regulatory alignment between Northern Ireland and t