Final answer:
The inference is that arranging the stars on the flag has been a design challenge, supported by the historical account of Bob Heft designing a flag with 50 stars while keeping the stars orderly.
Step-by-step explanation:
The inference about the flag that can be made based on "A Flag with 50 Stars" is that the placement of stars on the flag has been a design challenge throughout history. This is illustrated by the story of Bob Heft, who spent hours reconfiguring the 48-star flag to neatly include 50 stars in anticipation of Alaska and Hawaii becoming states. The historical difficulty of maintaining a neat and orderly star arrangement on the flag is evident from such efforts.
As evidence supporting this inference, the passage mentions, "The U.S. flag at the time had six neat rows of eight stars each. What would be the best way to add two more stars while keeping the arrangement neat and orderly?" This question posed by Bob's history teacher directly relates to the challenges of flag design and the importance placed on maintaining an orderly star arrangement.