So keeping your fingers crossed does work then.
Last week I was doing just that to help CERN's Large Hadron Collider, LHC, switch on successfully and lo and behold the project started up with no major problems.
But it is still early days yet for the LHC and we are not likely to see full power particle beam collisions for months if not years.
That is if we ever see full power being used at all given the parlous state of the European Union's power industry.
In fact maybe we should all start crossing our fingers again in the hope that we will not all be sitting in the dark during the next few years.
This week the European plant engineers' association VGB has urged European Union countries to quickly build new power generation plants to put in an additional 400,000 MW, or half the current total again, by 2020.
Installed power capacity in the bloc's 27 members states currently stands at around 780,000 MW and VGB projects a rise in electricity consumption by 15 percent to 4,000 terawatt hours (TWh) in 2020. The jump in demand seems to come mainly from more electrical gadgets being used in households, especially in eastern European countries.
New areas of power use in Western Europe are also emerging despite savings drives and efficiency gains. Developments like heat pumps and electric vehicles are now starting to contribute to the power drain.
The rise in demand is all happening at the same time as the EU's executive Commission is pushing for reductions in carbon dioxide emissions from manufacturers and the energy sector. The EU wants a fall by 21 percent by 2020 from 2005 levels.
The VGB and a number of other organizations across Europe reckon the pace of renewable energy sources deployment will not be enough to keep step with rising demand, which would necessitate huge amounts of thermal capacity.
The VGB calculates that out of the envisaged total 400,000 MW, some 170,000 MW should be gas fired or coal fired plants.
Well I suppose the good news is that power management design engineers are going to be in demand for the next few years as everyone tries to squeeze the last drop of power out of their equipment.
So I guess we might all have to get used to working with our fingers crossed for the foreseeable future and hope that technologies such as International Rectifier's gallium nitride (GaN)-based power devices quickly transfer out of the prototype phase and into finished products.