The Fourth Guest is a barometer adapted to measure the confidence of financial markets in Euro Bond market. The app, measures quot;financial pressure quot; or spread between the interest of the different europeans countries public debt. 4th Guest name responds to the emergence of financial power in European politics during this european bond crisis. That is, the entry of a fourth power - anonymous and unknown - in the traditional collective bargaining between government, unions and employers. With that, the installation reflects on the ongoing transformation of politics in a financialized society. fourthGuest