Sometimes an existing investment fund will be underused or completely unused. The National Museum, established in 1983, has been described as "underused and overlooked". The tracks used a combination of redundant and new viaducts and underused routes. Also, Brian Williams was tragically underused in his cameo. Despite the availability of these resources, these services are severely underused in this population. Arguing the impact's uniqueness is an underused but effective argument. Bale felt the previous films underused Batman's character, overplaying the villains instead. The sharing economy is built on the sharing of underused assets, both tangible and intangible. However, fieldstone as a building material is very much underused. In hunting and gathering societies, resources are often if not typically underused. Highly effective contraceptives, such as IUD, are underused in the United States. Critics have argued that HOV lanes are underused. Some critics complained that the character was underused in the sequel. Bonham Carter received positive reviews as Bellatrix, described as a "shining but underused talent". One labor-intensive underused waste is electronic and computer waste.