Label each of the following statements true, false, or uncertain. Explain briefly.

a. It is clear that the rate of technological growth has declined in the last decade.

b. The change in employment and output per person in the United States since 1900 lends support to the argument that technological progress leads to a steady increase in employment.

c. Workers benefit equally from the process of creative destruction.

d. In the past two decades, the real wages of low-skill U.S. workers have declined relative to the real wages of high skill workers.

e. Mismeasurement explains a large part of the decline in technological progress.

f. New technologies do generally displace workers with lower skills.

g. Innovations known as general-purpose technologies occur frequently.

h. The introduction of robots may actually increase total employment.

i. There is evidence that workers displaced by plant closures associated with technological change suffer a long-term wage loss.