Poorly written or poorly documented ones can seriously hamper development and jeopardize the project.

In 1910, controversy arose between the millrace owners and property owners, ensuing in a multi-year legal battle that would hamper development along the race.

Its first flight was in 1940, but problems with the design hampered development and it remained only marginally stable throughout the prototype phase.

The disturbance was located within a marginally favourable environment for development with strong vertical windshear and a large area of dry air hampering development.

Problems with financing and technical infrastructure have hampered development, and the industry generally lacks executives well-versed in the music business.