The causes of physical barriers to digital equity in the classroom are simple to name, but difficult to overcome. First and foremost is the issue of affordability: though the cost of computers decreases steadily over time due to increased efficiency in production, computers and internet access remain unaffordable for many. This is an issue at two separate levels: the individual, and the school level. Individual households may be unable to afford computer technology, and governments may also not have enough funding to improve the ICT infrastructure in their school systems. Secondly, there are many parents and students who do not realize the importance of ICTs in education. For the most part, it is not as though they do not care about their children's educations; they simply do not realize that incorporating ICTs into school and home life has very positive benefits. This lack of information can severely restrict a student's access to ICT.