If they are inefficient, they will waste money.
But because they're inefficient, they use a lot of fuel.
For example, forward-time methods are most flexible because they can follow the evolution of a real population closely, but they are inefficient because they simulate all ancestors, including those who do not have offspring in the simulated population.
Many P system simulators have been presented in this area, but they are inefficient since they cannot handle the parallelism of these devices.
In the aftermath, Ukraine's Prime Minister Arseniy Yatsenyuk had some angry words for the security forces, saying they were "inefficient and they violated the law".
Mr Yatsenyuk said the security service and law enforcement office had done "nothing to stop this crackdown", saying they were "inefficient and they violated the law".
Campaigns take a long time to organise and when they finally get under way, they're inefficient.
Incandescents are dirt cheap to make, but they are inefficient: Only 5% or so of the electric energy they consume becomes visible light.
If everything fits into memory then they perform better than Ukkonen's algorithm but as soon as it goes beyond memory capacity they become inefficient.
However, they require expensive ultrashort pulsed lasers (e.g., a femtosecond laser) to perform the excitation as they involve inefficient nonlinear optical processes.
