The confusion on the PCT occurs at trail junctions. When you come to a junction oOn the AT, usually one trail has those white blazes, and the other one doesn’t.
On the PCT, a typical trail junction may have a trail sign, it may not. If there is a trail sign, it usually doesn’t indicate “PCT that-a-way”. Instead, it may have John’s Ridge Trail going left and Jane’s trail going right. You have to decide if the PCT is John’s trail or Jane’s trail. That’s why you need to purchase the three PCT Shaffer guidebooks. I wouldn’t hike without them.
As Spirit Walker said, you will not lose the trail. Except when it’s buried in snow, the PCT tread is blatantly obvious.
yogi
yogi