why can't the line go through the cylinder directly?

[carefulunicorn 0]

In the last question, why can't we go through the cylinder directly?

[energizedpanda]

@carefulunicorn-0 I'm pretty sure you can only go on the surface I don't know if the problem specifies that though

[audrey]

@carefulunicorn-0 Yep! As energizedpanda says, the path needs to be on the surface of the figure-- imagine a bug crawling along :). (otherwise the answer for any kind of 3D shape would always be a straight line between the two points!)