Unbelievable

New child benefit changes have come into effect today. 

http://www.bbc.co.uk/news/business-20912268

Am I the only one utterly stunned that a family with a single income of over £50,000 will lose part of their benefit, but a family of TWO incomes of £35,000 and £20,000 respectively will keep ALL of theirs?

At what point did this country lose all of its marbles?  Can we no longer do simple maths?