We came down from the mountain and lake several hours later and headed to the ranger station. My sons had found the remains of an animal and brought samples of the fur to the rangers for identification (a moose). I brought photographs. One ranger thought it was a sticky geranium and showed me a photograph of that. No. The color was too light, and the stamen was not yellow. Another ranger suggested the red monkey flower. Did it grow by water? she asked. Yes! That was it.
The rangers are like librarians, helping visitors discern differences, asking questions to get at details, and guiding them to sources (like Wildflowers of Glacier National Park by Shannon Fitzpatrick Kimball and Peter Lesica, which I used often). They promote discovery while fulfilling a desire to find the answer.