Przecisk

squeezing in squeezing out 'Przecisk' seems to be the Polish for "pipe jacking", "moling" or "ramming" - all terms that were meaningless to me this morning. Apparently, they describe the trenchless method of constructing pipelines and tunnels, using machines that burrow underground like a mole. But, in this case, I think the colloquial meaning of…Read more Przecisk

Perception

Seeing is believing. Or is it? Is what we see real, or is there a worrying gap between perception and reality? Philosophers have been arguing about this for centuries. One thing is certain: optical illusions and hallucinations exist so, at least in those cases, our perceptions must lead us astray. In most everyday situations, though,…Read more Perception