Final answer:
The claim that a control line should be 10-15 feet from the working edge is false; in practice, the control line should be much closer for precision in overhand bricklaying.
Step-by-step explanation:
The statement that a control line for overhand bricklaying will be between 10' and 15' from the working edge is false. A control line should be much closer to the working edge to ensure accuracy and effectiveness in bricklaying. The distances mentioned are significantly larger than what is practical for bricklaying where precision is necessary, especially considering that it involves working against gravity. The reference to rough guesstimates versus carefully calculated approximations further underscores the need for precision in construction practices, where estimations can vary based on the method used.