Another example would be activities that pollute. If I perform an activity that pollutes, even though I may not want it, I will cause expense or difficulty to another person. My driving a vehicle which consumes petroleum releases noxious fumes into the atmosphere. This has a detrimental effect especially on people whose bodies are sensitive to pollutants. Also my driving a larger vehicle at higher speeds means that people who walk, who bike, who are or even others who drive need to pay a cost for my driving. Certainly driving a car is convenient, and fast, but it is not efficient with respect to energy, land use or pollution. This needs be remembered when there is talk of limiting the gas tax. If we limit or reduce the gas tax, we will need to do at least one of three things: we will need to cut government programs, we will need to increase other taxes, and/or we will need to increase the debt.
One activity that does not have negative effects on anyone is the exchange of labor. If I can wire a house for someone and that person can fix the plumbing for me, an exchange of labor is beneficial for both parties. That is one reason that the so-called fair tax has so many negative consequences. It is a tax on new goods and services, including food, clothing, medical services, and building materials which are needed for shelter. On the other hand, Land Value Tax, the land portion of property tax excluding improvements, encourages frugal use of land, which leave more land available for others.
An example of what a shift to Land Value Tax could do would be to compare two properties, one of which is has only a destroyed building on it and another next to it that has an active shopping center on it. Since the destroyed building has zero value on the tax roles, the unused lot pays less tax than the active, job-producing shopping center. This discourages job creation, which is should be a priority of any public policy. If the unused property were to pay the same tax per acre as the well-used property, you can be sure that the holder of the unused property would either build a job-producing facility on that property or sell it to someone who would. This would certainly reduce unemployment.