Human attention is often described as if it were simply shrinking, but the issue is far more complex. In a digital environment saturated with alerts, messages, and fast-moving streams of information, people are repeatedly drawn away from their immediate tasks, (21) _________. Instead of entering a state of sustained concentration, the brain is forced to reconstruct the previous mental context each time. (22) _________ depends not only on personal discipline but also on how carefully the learning environment is structured.

This does not mean that deep concentration has become unattainable. (23) _________. When students read a dense text or work on a cognitively demanding assignment, even a brief glance at a notification can disrupt the flow of thought and make it harder to regain the same level of focus.

Experts therefore recommend establishing deliberate routines that reduce unnecessary interruptions rather than relying on willpower alone. (24) _________. Such strategies are most effective (25) _________.