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What is the main conclusion of comparing the uninformed strategies?

  • A.All of them are exponential, so guidance is needed for large problems
  • B.Breadth first is the best strategy for every practical problem
  • C.Memory is never the limiting factor if the algorithm is well chosen
  • D.Uninformed search suffices for problems of any realistic size

Answer: A

Every uninformed strategy has time complexity exponential in the solution depth, so the family collectively defines the limit of what can be done without problem specific knowledge. Improving within the family changes the memory profile and the guarantees but not the exponent. That conclusion is exactly what motivates informed search, and understanding why no rearrangement of the frontier can escape the exponential is what makes the value of a heuristic clear.

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