Why does Pragmatism make Conservatism quite a Special Ideology?

-Pragmatism makes Conservatism hard to Pin Down in Simple Words, and may even suggest that Conservatism isn't an Ideology. -This could reflect what Conservatives think of their thinking as just 'Common Sense' -Critics may Accuse Conservatives as just Advocating Policies to get Public Support and not be Guided by Values or Principles -Suggests also COnservatism is Flexible and can Vary its Values