In a large, rectangular art gallery, there are partitions set up to create unique display areas for different artists' work. The gallery is divided into three sections with two partitions, creating a T-shape when viewed from above. The main entrance to the gallery is at the bottom of the T, and the vertical line of the T is longer than the horizontal top. The partitions are as tall as an average person and cannot be seen over.

In the left section of the top of the T, a sculpture is set up that emits a soft pulsing glow. It draws attention because it momentarily brightens and then fades to near darkness before brightening again. Varun, an art enthusiast, has just entered the gallery and stands at the entrance, which is directly aligned with the bottom of the T. He is curious about the artworks but has not started walking yet.

In the right section of the top T, Jun-seo is adjusting the lighting of his photography exhibit. He cannot see Varun directly because his view is blocked by the partition. However, Jun-seo is intermittently peering around the corner of the partition to observe visitors' reactions to his work.

Zahra is in the vertical section of the T, looking at a painting on the far wall. This places her in such a way that she has a partial view of the sculpture in the left section whenever the sculpture emits its brightest light because the glow reflects on the partition's edge.

Deque is a curious child who has come with his family. He is in the center of the T intersection, marveling at both the pulsing glow of the sculpture to his left and Jun-seo's large photos to his right. Deque, being shorter than the partitions, cannot directly see Varun, Zahra, or Jun-seo.

Finally, Lina has just rounded the corner of one of the horizontal sections of the T and is now standing near the sculpture, fully engrossed in the details of its construction. She is positioned in such a way that she can see down the vertical section of the T toward Zahra when the light from the sculpture is at its brightest.

Given this information, what can each person see from where they are standing right now, and how will this change as Varun begins to walk into the gallery?
With Varun standing still at the entrance of the gallery, he cannot see anyone due to the tall partitions. The T-shaped layout prevents direct line of sight to the other visitors. However, as he would start to walk forward, the layout of the gallery and the position of the partitions will determine what he could see.

Since Varun is aligned with the bottom of the T, as he walks forward, he would first come into sight of Deque, who stands at the intersection of the T. Varun would also begin to see the glow from the sculpture if he times his walk with the brightest emission of light. Varun would not be able to see Jun-seo and Zahra at this point due to their positions behind the partitions. Lina, engrossed in the sculpture's details, would also remain out of Varun's view, as she is around the corner of the horizontal section.

Jun-seo, peeking intermittently around the partition, may catch sight of Varun moving into the gallery if he looks around the corner at the right moment. Jun-seo's view of Varun would depend on the timing of his peeks and Varun's pace as he enters the gallery.

Zahra, focused on the painting on the far wall, has no direct line of sight to Varun and will not see him until either he comes further into the vertical section of the T, or she walks out towards the intersection. However, as Varun advances further into the vertical section, his silhouette may become visible to Zahra in the soft glow reflected off the partition edges when the sculpture pulses with bright light. 

Lina, who is near the bright sculpture, would eventually see Varun as he walks enough into the gallery to clear the partition that blocks her current view. Once he reaches the T intersection, there would be nothing obstructing her view from seeing Varun.

Deque, meanwhile, would see Varun coming towards the intersection; as Varun nears, Deque's ability to view the glow from the sculpture would likely be impeded by Varun's approach. Deque is the only person who can see Varun without any change in his own position, simply due to the fact that he is at the intersection and shorter than the partitions.