Such constraints include the need to adhere to certain standards or a limitation upon their ability to make excessive profits.

These constraints include the risk of flooding and expected future household water shortages.

Typically these constraints may include (however these constraints do not apply to all speech recognition systems):

Physical constraints include geotechnical issues and 100 year flood plans.

These constraints include requirements, goals, physical laws, conventions, assumptions, models, and resources.

Other minor constraints include tectonic compression, thrusting, and sediment compaction.

Hydrodynamic constraints include the ability to withstand shock waves, weather collisions and groundings.

The constraints include public resistance to higher pay for public officials - or, at least, the perception of such resistance.

These constraints may include issuing public debt $-for-$ everytime they spend beyond taxation.

These constraints include the safety and serviceability of the structure.