I wish I had bookmarked this comment, but someone here was dismissive of the Apple Watch's heart tracker because, paraphrased, "I just need my fingers to take my own heart rate any time I choose."
What you're arguing is both true and irrelevant. We don't even need photographs, we could just sketch whatever is in front of us, but convenience matters.
What you're arguing is both true and irrelevant. We don't even need photographs, we could just sketch whatever is in front of us, but convenience matters.