It was in the cenobitic rather than the eremetic form that monachism was first introduced into the west, at Rome and in northern Italy by Athanasius, in Africa by St. Augustine, and afterwards in Gaul by St. Martin of Tours.

Closing the aperture results in more collimated light, as only light traveling in the right direction can make it through the smaller opening.

It became more Alice in Wonderland all the time: was I now to navigate as well?

The sacrificial coating protects the hull, but because it takes the damage the hull doesn't, we must replace it annually.