Is it the case that Cathode Ray tube would not have this type of aliasing issue, due to the continuous nature of the displayed signal on screen (rather than the discrete raster display)?

@goku2021 I'd say that it would depend on the functional granularity of this ray - if we want to avoid any pixelization, we'd have to have a different monitor "interface" that accepts continuous lines. Perhaps an SVG interpreter that converts lines to CRT patterns. I suspect there'd be a host of other issues when it comes to shading/materials/texturing in this hypothetical non-pixel based system (ie. textures are still fundamentally bitmaps)?

@goku2021 @jochuang Bear in mind that a CRT still has "pixels" per se. Though the electron beam in the CRT is continuous in nature, a "shadow mask" on the phosphor screen of the CRT still divides the signal into discrete RGB components. I suspect that the natural blurring and diffuse light of the phosphor screen once excited, though, will produce a subtle though perhaps unintended anti-aliasing effect. So perhaps the lack of aliasing in the CRT probably just comes naturally - nature has pre-filtered it for us through these glowing phosphor screens.