Experimental design isn't practical for large projects like airport construction. An effective experimental research effort requires:

• Time for establishing the relationship between cause and effect.
• Invariable behavior between cause and effect.
• The eminence of the cause-effect relationship is as desired.

The challenge with large projects is the amount of time and the cost to structure the experimental design conditions to achieve these goals of the experiment. Large projects may be explored more effectively through simulations when seeking understanding of cause and effect relationships.

Also, an experimental design for airport construction may require the researcher to consider too many variables that'll have multiple levels of cause and effect relationships. An alternative approach may be to benchmark conditions based on the construction of other airports consistent in size and complexity during the planning of a new construction.

Finally, experimental research has a moral responsibility to protect participants from harm when participating in the experiment. The concept of airport construction has many human safety elements that would be unrealistic to control during an experiment and could result in harm and unsafe conditions for participants. An alternative to experimental research may be exploring incidents and safety records from other airports to identify potential cause and effect relationships without engaging human subjects.