Ruth Porter defended the role of think tanks on the Channel 4 news website.
"The greatest influence that think tanks can have is shaping public opinion," she says. "The influence think tanks have on politicians is dependent on how well they influence the public debate. If the public aren't convinced, then think tanks aren't going to be able to persuade politicians.
"There's no such thing as a neutral idea," she adds. "Every concept is built on presuppositions about your idea about what society should look like."
Read the article here.